The thread was started here because I happened to see that this is where all group buys for the same hardware showed up. Apologize, but I was just following suit!

I believe you're referring to the "marketplace"? It looks like that's more suited to one-off sales of random this-and-thats. In comparison, I'm a direct reseller for ASICMiner and deal in the hundreds.

Personally, if I was looking for new, bleeding edge, mining hardware to purchase, I would come to "custom hardware" (in fact, I have, several times) ... while if I was looking for say liquid nitrogen, well, I wouldn't expect it to be here.