The standard fee on
ebay is 10% if you don't have a store ($20 or $25/month, depending on your commitment), so you're paying that
ebay store fee to get a comparable rate. And that store fee gives you 250 listings, if I'm recalling correctly, right? Plus 250 auctions, if they're in one of the collectibles categories. So you're paying quite a bit more on
ebay for 250 fixed-price or auction listings and another 250 auction listings.
On Hipstamp, for $5.00/month you can list up to 10,000 items, so it's a pretty low-cost way to offer a lot of inventory. ($15.00/month gets you 100,000 items.)
It certainly doesn't have the eyeballs of
ebay, but unlike
ebay, it doesn't cost very much to "list it and forget it" until it sells.
Here are the rest of the details from the page Rodney showed you the transaction fees:
https://www.hipstamp.com/site-feesI'm not affiliated with them except as a customer having a very small store there.