I have owned and played a Cremona bass for over 15 years. I got it in the 7th grade, kept thinking about buying another bass, but just decided to pay for the upgrades as I went. Maybe mine is just special, but I have never run into a situation where I found a bass for under 4k that I would rather own. I paid 500 for mine (which is a solid top) and have since had John Peterson of World of Strings in Long Beach do a TON of work to it. I had no problem paying 1k or so for a new fingerboard, bridge, and top off repair. That 1k was FAR less than the available basses that were better quality than mine.
Down the line, yes, I might get a great 6k bass, but I probably won't make 6k playing it in my lifetime. When I do get that bass, I will likely sell this bass to a student for the 500 I paid for it and consider the 2k worth or repair, setup, and maintainence the 20 year rental fee for the bass.
It is possible that the quality has gone down, but this bass was never near as bad as what the average school bass feels like. However, people crap on them none the less.