Yes but their store fee is too much they charge a lot fee

Yes

Yes, you price your own items. It's very easy. When you open up your listing, there will be thumbnails with links to listings of similar items. The prices of those items are near the thumbnails.

Yes you set your own prices. They send you an email when your items are ready to be priced. You can also change the price at any time.

I believe you do. I would just write them down on a paper and include it with the clothes.

Yes you can price your own item and make sure that they ( swap.com) approves it. Hope this will help

Yes