I've sold on there a few times. Primarily because my expermiments with sellers left me convinced that 90% of the items were bought at a dollar store and had the term magick slapped on them, and sold for an unreasonable price. ( I love how you sell a money spell for 30 bucks. If they had 30 bucks to spend Im sure there wouldn't be such a dire need for the spell ).
Tip: If it's big, flashy, obnoxious or has some odd random spirit attached to it, don't trust it.