Where to sell Baby & Kids: best platform in 2026
Direct answer: For baby and kids inventory, start with eBay, use Mercari as the low-friction second check, and only move toward Etsy when the item behaves more like handmade, nursery, or giftable inventory than practical secondhand gear. Use this baby & kids recommendation as a starting order, then compare the top fee calculators with your real sale price, shipping cost, item cost, and lowest acceptable offer. If Mercari can command a higher sale price, faster sell-through, or lower fulfillment risk than eBay, audience fit can beat the lowest-fee route.
Buyers scrutinize safety and cleanliness more than in other categories -- condition photos matter more than brand here.
The honest first routes for Baby & Kids
For baby and kids inventory, start with eBay, use Mercari as the low-friction second check, and only move toward Etsy when the item behaves more like handmade, nursery, or giftable inventory than practical secondhand gear.
Best first check: eBay
Strongest broad-market baseline for practical baby and kids inventory.
Compare eBay for Baby & KidsSimple second check: Mercari
Best low-friction alternative when the listing still works at the same accepted price.
Compare Mercari for Baby & KidsGiftable exception: Etsy
Best audience check when the item is handmade, nursery-led, or decor-adjacent rather than purely practical.
Compare Etsy for Baby & KidsFee comparison for Baby & Kids
| Platform | Fees | You Keep | Effective Rate | vs Cheapest |
|---|---|---|---|---|
| Depop | $3.35 | $84.65 | 3.8% | Lowest |
| Mercari | $8.80 | $79.20 | 10.0% | +$5.45 more |
| Facebook Marketplace | $8.80 | $79.20 | 10.0% | +$5.45 more |
| Etsy | $8.81 | $79.19 | 10.0% | +$5.46 more |
| Whatnot | $9.25 | $78.75 | 10.5% | +$5.90 more |
| Grailed | $11.48 | $76.52 | 13.0% | +$8.13 more |
| eBay | $12.37 | $75.63 | 14.1% | +$9.02 more |
| Amazon | $13.20 | $74.80 | 15.0% | +$9.85 more |
| Poshmark | $16.00 | $72.00 | 18.2% | +$12.65 more |
| StockX | $9.60 | $70.40 | 12.0% | +$6.25 more |
Treat this ranking as a modeled shortlist
This category hub ranks marketplace options for Baby & Kids with the same sale inputs, seller-paid shipping assumptions, and the closest available fee category in each calculator. It is a first-pass shortlist, not a guarantee that one marketplace will sell faster or at a higher accepted price.
The official fee-source checks below support the recommended routes. Use the Fee Index for same-input rows, Fee Changes for recent policy updates, and Seller Reports for dated summaries before citing a category winner or fee trend.
Test the winner before you list
Use this category ranking as the shortlist, then run the sale through payout, break-even, shipping, and item-specific guides before choosing the final marketplace.
Depop is the cheapest for Baby & Kids at $80.00, charging $3.35 vs. StockX's $9.60 -- a $6.25 gap.
Direct answer for Baby & Kids
For baby and kids inventory, start with eBay, use Mercari as the low-friction second check, and only move toward Etsy when the item behaves more like handmade, nursery, or giftable inventory than practical secondhand gear. Use this baby & kids recommendation as a starting order, then compare the top fee calculators with your real sale price, shipping cost, item cost, and lowest acceptable offer. If Mercari can command a higher sale price, faster sell-through, or lower fulfillment risk than eBay, audience fit can beat the lowest-fee route.
Depop has the lowest modeled fee in the table at $3.35, leaving $84.65 before item cost and seller-paid shipping. That makes it the fee baseline, not an automatic winner; audience fit and accepted-offer pressure still have to clear the same sale price.
Fee ranking at the modeled price
The current fee ranking for baby & kids is 1. Depop at $3.35 (3.8%); 2. Mercari at $8.80 (10.0%); 3. Facebook Marketplace at $8.80 (10.0%). The gap between the cheapest and most expensive option is $6.25, which is large enough to matter on repeat inventory and thin-margin sourcing lanes.
Depop is the cheapest for Baby & Kids at $80.00, charging $3.35 vs. StockX's $9.60 -- a $6.25 gap.
When Mercari still deserves the listing
Mercari stays in the decision because Best low-friction alternative when the listing still works at the same accepted price.
Use the third-ranked marketplace as a stress test, not a default. It should earn the listing through category-specific demand, not because the headline fee looks familiar.
Shipping and markdown checks before listing
Run the top two routes with the exact shipping plan you will publish: buyer-paid shipping, free shipping, or a shipping discount can change both fee base and real payout. For bulky, fragile, or low-price baby & kids, this check is often more important than the marketplace percentage alone.
Then rerun the same listing at the lowest offer you would accept. If eBay only works at the optimistic list price, it is not really the best platform; it is a fragile best case. The better route is the one that keeps profit acceptable after a normal markdown.