I buy most of my stuff on a national auction site (eBay tried but didn't take with us). The stuff is new and comes from shop close-outs or small importers. I wouldn't have a chance to get something like the Amethyst or Tantus Acute otherwise. I haven't yet the chance to order from Eden.
You can set up a separate account. I do all my toy shopping through my normal account - that site is set up in a way that hides what was sold after a month.
Ebay can delete adult auctions. They got rid of a lot of "buy now" glass dildo offers. Shame since they were reasonably priced (similar to Eden, but within Europe so the shipping would be less for me).