Opportunistic bottom-feeder, I suppose. Although there is some focus creeping in, driven by a lack of storage space.
But if its is cheap, my size (or mrs non-fixie's for that matter)
AND interesting, I'll find it hard to resist.
Latest example below. Rare brand, looks nicely made (and it says "Pro" and "handgearbeitet"!), interesting tubing, perfectly sized, €40. "Yes, I'll have that, please".