The market here in the US has bumped significantly. I have been buying good Modulus basses for the past several years, and I can report less than 5 original Flea basses equipped with factory Modulus-spec Lane Poors to come across my radar. I was lucky enough to recently score an excellent 1996 example of the Flea 4 with a LP, all of the earliest features and a rare Satin Black finish and, thank goodness, an arrow straight neck! It was well below $2000US It is an awesome bass!
I really love the Quantum basses, and prefer the pre-trussrod neck profile, but, again, be careful with warpage, particularly on the Q4s.
Prices on the Quantums have escalated as well, with excellent newer truss-rod equipped examples (most prefer these) selling in the $2000 and up range, 40% higher than just a couple of years ago. Fortunately for me, the earlier ones can still be picked up here and there in the $1500ish range, depending on a bunch of variables.
Lagging behind are the other Modulus models, the Genesis, VJs, Vertex, and super-early ones...for now.
FYI, Geoff Gould, the originator of the design, left the company in 94 and is building this style of bass today. They aren't cheap, I have never tried one, but they appear to me to be awesome instruments and carry the graphite-neck torch forward in a most authentic manner.
Can't post pics from work, otherwise I would.