Yeah, haven't heard of them personally, but that is one of the most extreme monthly membership fees I have ever seen!
I deal in games and I know what volume I need to buy in to get a price even close to allowing a small margin on eBay, so I can't begin to imagine how a Drop Shipper will be able to supply prices that would give you any margin at all.
That aside, I would never go in blind like they are wanting. If they aren't prepared to show good faith and provide you with prices upfront, then they have something to hide in my opinion!
I've worked in marketing for many years, and the art of marketing is to make a product or service sound as good as it possible can, while reducing the focus on any negatives. These guys are promoting the negatives and hiding any positives, which indicates to me that there are ZERO positives to promote!
You should do a whois database check on them before anything, that will give you vital research information.