In the forum under the "EdenFantasys - general" section there is a subforum called "Shopping the site" with a thread called "EF should carry" where users make suggestions. Find the one for the current month and go wild
Personally I think it would make plenty of sense for EF to carry binders. They have a section for "gender expression" and they already carry packing cocks. There are lots of products on this site that aren't specifically used for sex, so I don't see what that has to do with it. There are plenty of people who bind their chests that shop on EF, so it would be a good move for them. And other online sex shops, like Babeland, carry binders.