Pretty sure it's a "distributor list dump" type operation (like Corporate Wines in MA . the defunct Cellarbrokers, and a bunch of others). Odds are strongly against them actually having anything that might be searched for. Let us know if you're successful.
I've wondered about this place too. The given address is 1 Beechwood Rd. in Summit; there is a small, not particularly interesting wine shop on that corner, IIRC. There seems to be a growth of vendors on Winesearcher that list mostly things they don't have in stock at very attractive prices. It is almost bait and switch and I should think Winesearcher would want to discourage this practice before people just give up on their service.