I haven't really been looking at purchasing a bus for too long now (was on the eurovan / vanagon band wagon, but am now also considering a bay-window), but wow, the prices of bay windows sure have risen a lot as of late!
I remember browsing the samba about a decade ago and clean rust free Arizona and California buses were $5-8k. Now they are in the $20's!
I just missed a nice little project 1972 bus on craigslist for $500 (wonder if someone scooped this up on the site), but typically rusty runners are in the $5k plus range locally!
Just my observation.
Cheers!