Best: All within the last year, in good shape, either in Tokyo or Hamamatsu (approximate cost in dollars, but paid in yen):
(a) Contax G2 body (two scratches in the back, but otherwise in excellent shape): $100
(b) CV 35/2.5 PI (in excellent shape): $130
(c) Avenon 28/3.5 (with case, finder, and hood; in excellent shape): $170
(d) Canon P (mint condition, looks new): $160
(e) Canon 50/1.4 LTM (in very good shape): $84
Worst: Haven't had anything crazy, but perhaps overpaid for a used 50/2 Summicron ($500) that started to have trouble with the front element unscrewing. Took it to the Leica boutique in Ginza, and paid $20 to get it fixed.