To start a reselling business on Amazon and eBay, you buy discounted, clearance, or liquidation products, then resell them at a markup that covers marketplace fees and shipping. Begin with $200-$500, a free scanning app like Amazon Seller or eBay's sold-listings filter, and a single sourcing run at a Target, Walmart, or TJ Maxx clearance aisle. Sell fast-moving, in-demand items on the platform that fits each product best: Amazon FBA for new, branded goods at scale, and eBay for used, vintage, or one-off items.

That's the whole loop. The rest of this guide turns it into a repeatable system: where to source, how to do the margin math so you don't lose money, how to avoid the Amazon gating and suspension traps that sink beginners, and a step-by-step $200 first run.

What "arbitrage reselling" actually means

Reselling (also called arbitrage or "flipping") is simple: buy low, sell higher, keep the spread after costs. There are three sourcing models, and serious resellers in 2026 blend all three.

  • Retail arbitrage - You buy clearance or sale items in physical stores (Target, Walmart, TJ Maxx, Marshalls, CVS) and resell them. Lowest barrier, but you trade time for deals and competition is heavy.
  • Online arbitrage - You buy from online retailers' sales pages (often using AI-assisted deal scanners) and ship to a prep center or your home. Scales better than retail because you can source from your couch.
  • Liquidation sourcing - You buy returned, overstock, or shelf-pull inventory in bulk pallets from sites like B-Stock or Direct Liquidation. Bigger upfront cost ($150-$500 per pallet), unpredictable condition, but the per-unit cost is the lowest of the three.

For a side-hustler starting this weekend, retail arbitrage gets you a first sale fastest. Online arbitrage is where you'll spend most of your time once you scale.

Amazon vs. eBay: which platform for which product?

This is the decision most guides skip. You don't pick one platform - you match each product to the platform that pays best. Here's the framework.

Factor Amazon (FBA) eBay
Best for New, sealed, branded products Used, vintage, rare, one-off items
Selling fees Referral fee ~8-15% + FBA fulfillment fees Final value fee ~13.6% + $0.30/order
Account cost $39.99/mo Professional plan Free; ~250 free listings/month
Speed to first listing Slow (gating, prep, ship to FBA) Fast (list in minutes)
Gating risk High - many categories/brands locked Low
Buyer expectation Fast Prime shipping, new condition Tolerant of used, willing to wait
Upfront capital Higher ($500+ recommended) Lower ($100-$200 works)

Rule of thumb: If it has a barcode and is sealed in original packaging, check it for Amazon first - FBA's Prime customers pay full retail and you don't touch shipping. If it's used, opened, collectible, or weird (a vintage Walkman, a discontinued Lego set, a single designer jacket), it belongs on eBay where buyers search for exactly that.

Many resellers run both: Amazon for volume on replenishable products, eBay to clear odd lots and higher-margin vintage. For deeper platform-specific setup, see our guides on starting an Amazon FBA business and starting an eBay business.

The scanning-app workflow (how you actually find deals)

Walking a clearance aisle blind is gambling. The workflow that works:

  1. Install the free Amazon Seller app (requires a seller account) and the eBay app. The Amazon app's built-in scanner shows you the current Buy Box price, sales rank, and your estimated FBA fees instantly.
  2. Scan the barcode of any discounted item. Read three things: the sell price, the sales rank (lower = sells faster; under ~100,000 in most categories is healthy), and the fee estimate.
  3. Check eBay sold listings in parallel. Open eBay, search the product, filter to Sold Items. This shows real prices buyers actually paid - not asking prices. Do this before every purchase; it's the single most important habit.
  4. Run the margin math (below) before you put it in the cart.
  5. Watch for gating. If the Amazon app flags "You are not approved to sell this product," that's a gate - skip it or plan to get ungated later.

Paid tools like Keepa (price-history charts) and AI deal scanners speed this up for online arbitrage, but you can run a profitable side hustle on the free apps for months.

The profit-margin math (do this before every buy)

Most beginners lose money because they only subtract the buy price. Real costs stack up. Here's the full formula for an Amazon FBA sale:

Net profit = Sale price
           − Buy cost (what you paid)
           − Amazon referral fee (~15% of sale price)
           − FBA fulfillment fee ($3–$6 typical for small/light items)
           − Inbound shipping to Amazon (~$0.50–$1 per unit)
           − Sales tax you paid at the register (unless exempt)

Worked example: You find a toy on clearance for $12 that sells on Amazon for $30.

  • Sale price: $30
  • Referral fee (15%): −$4.50
  • FBA fee: −$4.50
  • Inbound shipping: −$0.75
  • Buy cost: −$12
  • Net profit: ~$8.25 per unit (about 27% margin)

Target a minimum of 25-30% net margin or a $5+ net profit per unit after all fees. On eBay the math is simpler - subtract the ~13.6% final value fee, $0.30 per order, and your shipping cost - but the discipline is identical: calculate before you buy, not after.

Amazon gating, IP complaints, and account health (the part that gets people suspended)

This is the biggest gap in most beginner guides, and ignoring it gets accounts shut down.

Gated categories and brands. Amazon restricts who can sell in categories like grocery, beauty, and toys (toys often lock down before Q4 holiday season), plus thousands of individual brands. To get ungated, Amazon usually asks for an invoice from a legitimate wholesale supplier showing 10+ units. Retail receipts from Target usually don't count. Plan ungating before you buy a pile of gated inventory.

IP complaints. Brand owners can file intellectual-property complaints if they don't want their products resold. A few complaints can suspend your account. Protect yourself by sticking to brands that don't aggressively gate, keeping every receipt and invoice, and never reselling obvious counterfeits or "bundles" you assembled yourself.

Account health. Amazon scores you on order defect rate, late shipments, and policy violations. Three quick rules: never list a product you can't prove you bought authentically, respond to every buyer message within 24 hours, and don't push into gated categories with retail receipts hoping no one notices.

If Amazon suspends your account, you submit a Plan of Action appeal: acknowledge the issue, explain the root cause, and list the specific steps you'll take to prevent it. Keep it factual and short. This is exactly why you save every invoice - documentation is what gets accounts reinstated.

eBay is far more forgiving, which is another reason to start there or run it alongside Amazon.

Tax and legal setup (don't skip this)

You can start reselling as a sole proprietor under your own name - no LLC required on day one. But three things matter from your first sale:

  • Business license / LLC. An LLC isn't legally required to resell, but many resellers form one once they're consistently profitable, for liability protection and easier bookkeeping. See our breakdown of whether you need a license to sell online before you spend money on filings you may not need yet.
  • Sales tax. Good news: thanks to mature marketplace facilitator laws, Amazon and eBay now collect and remit sales tax on your behalf in essentially every U.S. state. You generally don't file sales tax per-transaction. You will often need a resale certificate to buy inventory tax-free from wholesalers and to get ungated.
  • Income tax (Schedule C). Your profit is taxable. Track Cost of Goods Sold (COGS) - what you paid for each item - because you're taxed on profit, not revenue. Marketplaces issue a 1099-K for your gross sales. Keep a simple spreadsheet: date, item, buy cost, sell price, fees, ship cost. The IRS Schedule C guidance covers exactly what's deductible.

A clean COGS spreadsheet from day one is the difference between a side hustle and a tax headache.

Your $200 first sourcing run: a step-by-step plan

Here's a concrete first run you can do this weekend.

Checklist:

  • [ ] Create an Amazon Seller account (start with the Individual plan - $0.99/item, no monthly fee - and upgrade to Professional at $39.99/mo once you exceed ~40 sales/month).
  • [ ] Create a free eBay seller account.
  • [ ] Install the Amazon Seller app and eBay app; enable the scanner.
  • [ ] Set a hard budget: $150 for inventory, $50 reserve for shipping supplies (poly mailers, bubble wrap, a $20 kitchen scale, free USPS boxes).
  • [ ] Drive to one store with deep clearance: Target, Walmart, TJ Maxx/Marshalls, or a CVS.
  • [ ] Hit the clearance endcaps. Scan everything with a yellow/red clearance sticker.
  • [ ] For each potential buy: check Amazon sell price + rank, check eBay sold listings, run the margin formula. Buy only items clearing $5+ net profit and selling within ~30 days (rank check).
  • [ ] Aim to spend your $150 across 5-15 different items - diversify so one dud doesn't sink the run.
  • [ ] List the same day. Used/odd items to eBay; sealed branded items to Amazon (FBA or merchant-fulfilled to start).
  • [ ] Log every item in your COGS spreadsheet.

What sells well in 2026: Nostalgia tech is hot - vintage cameras, Walkmans, and wired headphones ride Gen Z's analog aesthetic. Discontinued and seasonal-clearance toys, Lego sets, brand-name beauty, board games, and small kitchen gadgets are reliable categories. If thrift-store competition in your area is fierce, lean into running a thrift-sourcing operation for vintage clothing and collectibles, which face less arbitrage competition than barcoded retail goods.

If this is your first run and you net even $30-$60 profit, you've proven the loop. Reinvest it and repeat.

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Frequently Asked Questions

Do I need an LLC or business license to start reselling on Amazon and eBay?

No. You can start as a sole proprietor under your own name and Social Security number. An LLC is optional and most resellers add one only after they're consistently profitable, for liability and tax reasons. You may, however, need a resale certificate to buy wholesale inventory tax-free and to get ungated in Amazon categories.

How much money do I actually need to start a reselling business?

You can start with as little as $100-$200 doing retail arbitrage and listing on eBay. Amazon FBA realistically wants $500+ to cover the $39.99/mo plan, inbound shipping, and enough inventory to absorb a few mistakes. The smart move is to start small, prove you can find profitable deals, then reinvest profits rather than dumping savings in on day one.

What is the difference between Amazon FBA and eBay, and which is better for beginners?

Amazon FBA stores and ships your inventory for you and taps into Prime buyers, but it has higher fees, category gating, and stricter account-health rules. eBay is faster to list on, free to start, and far more forgiving - ideal for used and one-off items. For most beginners, eBay is the easier first platform, then add Amazon once you understand the margin math and gating.

What happens if Amazon suspends my account, and how do I avoid it?

A suspension freezes your listings and held funds until you submit a Plan of Action appeal explaining the issue, its root cause, and your corrective steps. Avoid it by keeping every supplier invoice, never selling into gated categories with only retail receipts, responding to buyers within 24 hours, and steering clear of brands that file IP complaints.

How do resellers handle sales tax when selling in multiple states?

Thanks to marketplace facilitator laws, Amazon and eBay collect and remit sales tax for you in nearly every state, so you usually don't file per-sale sales tax yourself. You do owe income tax on your profit - track your Cost of Goods Sold and keep the 1099-K the marketplaces send you. Check the SBA's small-business tax resources if you're unsure about your situation.