I've bought a couple of cabs from Dmoonsparkle, pretty nice guy. I'd do business with him again without hesitation. Of course I'm from Toledo, so its nice having a source of arcade parts 20 miles away.
From what I understand, he just bought a huge cache of parts from KY. Says he's going to be going through the parts for years.
He also sells directly. You can usually find him on alt.rec.arcade.marketplace