When I bought my first Warwick Thumb in 1988, it was £950 (I got it for £900, Dave at Musical Exchange was a jolly nice chap). For comparison, a new 3-bed semi-detached house had cost me £17k five years earlier. I had terrible crises of self-confidence deciding whether to buy it and finally made up my mind that I would. Since then, I've bought two more Thumbs and three Seis (all second-hand, I'm not made of money), and haven't bothered with having crises of self-confidence again.
As for Fodera, playability is a subjective thing. I've played a 4-string Fodera (since I moved over to 5-string only) and found it far less playable than not just my old Warwick JD Thumb but also a Cort GB4 I have. Based on that, I wouldn't buy one. Obviously, far better bassists than me (eg. Victor Wooten) don't feel the same way about them. Or perhaps they do, but they relish a challenge and get paid lots by Fodera.