Seller guides
Plain-English answers to the fee, pricing and shipping questions online sellers actually ask — all current for 2026, and paired with free calculators to run your own numbers.
Which marketplace has the lowest seller fees?
A 2026 comparison of seller fees across 14 marketplaces — who takes the least, and how to find the cheapest place for your item.
How to price your products for profit
The pricing formula that bakes in fees, shipping and your target margin — with a worked example and a 5-step checklist.
Poshmark vs Mercari vs eBay vs Depop
Where resellers keep the most in 2026 — fees, shipping handling and which platform fits your items.
Etsy vs Shopify: marketplace or your own store?
Fees, traffic and control compared — and the sales volume where Shopify becomes cheaper than Etsy.
eBay vs Amazon: which is better for sellers?
Fees, audience and fulfillment compared in 2026 — which giant keeps you more profit, and which fits what you sell.
How to reduce your seller fees
9 legit ways to keep more of every sale — store subscriptions, categories, pricing, bundling and more.
Does free shipping actually pay?
The marketplace fee math on free shipping — when it makes you money and when it quietly costs you.
Do you owe taxes selling your own clothes?
The plain-English 2026 answer for casual resellers — the 1099-K threshold (now back to $20,000), and exactly when reselling is taxable.
How TikTok Shop fees work in 2026
The ~6% referral fee, the new-seller rate, creator commissions and the optional fees — with a worked example of what you actually keep.
Where to sell sneakers in 2026
StockX vs eBay vs Grailed vs Whatnot — the fee math side by side, and the $150 price point where eBay quietly becomes the cheapest.
How Etsy fees work in 2026
The $0.20 listing fee, 6.5% transaction fee, payment processing and the Offsite Ads fee — explained, with a worked example of what you actually keep.
How Amazon FBA fees work in 2026
The referral fee, the flat FBA fulfillment fee, storage and the monthly plan — and why the flat fee punishes cheap items hardest, with a worked example.
How Walmart Marketplace fees work in 2026
One category referral fee, no monthly or listing fees — why Walmart is the cheapest big marketplace to start on, and the shipping catch that quietly eats your margin.
How eBay fees work in 2026
The ~13.6% final value fee, the fixed per-order fee, no required monthly cost and optional ads — explained, with a worked example and why the fee on shipping and tax raises your real rate.
How Shopify fees work in 2026
No sales commission — just a monthly plan plus ~2.9% payment processing — explained, with a worked example and why the fixed fee, not the per-sale cut, decides whether Shopify beats a marketplace.
How Poshmark fees work in 2026
A flat $2.95 under $15, a flat 20% above — and a prepaid shipping label that's included in the fee, which makes that 20% less steep than it looks. With a worked example and the bundling trick that beats the flat fee.
Where to sell trading cards in 2026
eBay vs Whatnot vs StockX — the fee math side by side, with a worked $100 example and why eBay, unlike with sneakers, gives trading cards no fee discount.
How Mercari fees work in 2026
A flat 10% selling fee, no processing fee and free withdrawals — one of resale's lowest rates — with a worked example and why the shipping you cover, not the fee, decides your margin.
How Depop fees work in 2026
US sellers pay 0% selling commission — just 3.3% + $0.45 processing — making Depop the cheapest place to sell, with a worked example and the three reasons "free to sell" still isn't free.
How Grailed fees work in 2026
A 9% commission plus 3.49% + $0.49 processing — one of fashion resale's lowest rates, and below Poshmark and eBay — with a worked example and why the commission skipping shipping works in your favor.
How StockX fees work in 2026
An 8%–9.5% transaction fee that falls as your seller level rises, plus 3% processing and a ~$14 authentication label — with a worked example and why that flat label makes cheap items so expensive.
How Whatnot fees work in 2026
An 8% commission (5% electronics, 4% coins) plus 2.9% + $0.30 processing — roughly 11% all-in, one of resale's lowest rates — with a worked example and why the live-auction format, not the fee, decides your margin.
How Reverb fees work in 2026
A 5% selling fee on item + shipping (capped at $500) plus 3.19% + $0.49 processing — roughly 8–9% all-in, one of the lowest cuts in resale — with a worked example and why the specialist music-gear audience, not the fee, sets your price.