Like Kalama, I took a look and had similar responses. I think if you find a missing fabric, then it is probably well worth the price to pay but you still have the standard trust issues/worries about timeliness and price of postage etc. But to be honest you get that with any direct buyer/seller.
One item that particularly concerned me is that the back pages (like 5 of them) are full of "sold out" items. Because of that, I would be concerned about how responsive the management is to the sellers and whether they will take care of web based issues.
And speaking of missing fabrics, I believe I have one someone is needing -- need to go check to see if I have the yardage they want.