Joined: Mar 2007
Posts: 668
Likes: 0
From: Lexington, KY
Bikes: Masi Speciale Fixed, Surly 1x1, 2 70's Bianchi folders, Swingbike, Columbia Cruiser 3 spd, Specialized Big Hit and P.2, Cove G-Spot, Xtracycled Bianchi San Jose.
Redline monocog is under 600 in both 26" and 29" versions. The Bianchi MUSS is 800 new so a used one might well be under 6. You could get a used surly 1x1 (what I ride) or On One Inbred in that price range too. The GT Peace is a ss 29er that can be had for about 450. Those are a few just off the top of my head.
of those I think the Muss and the Peace have discs, are you wanting full discs or one up front and a flip flop in the rear?