Ebay has the new system like Val has stated. You should have a seperate account like the other posters stated, especially if you are new. Also as to returns, update yourself on returns. They will approve returns automatically now so make sure your descriptions, photos and measurements are accurate. However, I have had few problems selling so far. Poshmark and Mercari do provide labels. The difference , even though they both give the buyer up to three days to 'rate' the seller, before you can get your money- otherwise it is automatically deposited; Mercari on its labels you have to put the box dimensions and weight and you are given a choice how you wish to ship- USPS, UPS Or Fedex. Poshmark gives you a label of up t 5 lbs for $7.95 flat rate prioirity mail shpiping so you can use the priorirty mail free boxes. Anything over 5 lbs you have to upgrade the label at your own cost. You can only ship an item up to 10 lbs on poshmark. I make more money on poshmark than I do on mercari because of the differences in shipping. Poshmark takes more money, but that is why your prices are higher. And it is not just for clothing-plenty of people sell dolls, home goods, books, etc. on there too. It is a great place to sell and get offers for your items or if someone likes your item, you can send an offer too. Good luck.