Sweet deal! My personal policy is that I only buy lenses in excellent condition, and I won't pay more than 70% of current retail pricing for a used lens.
Some good deals I've gotten in the past:
- EF 200mm f/2.8L II for $450 (62% of retail at the time)
- EF 300mm f/4L IS for $725 (60% of retail at the time)
- MP-E 65mm f/2.8 1-5x Macro for $500 (50% of retail at the time)
All from Craigslist. I subsequently sold the 200/2.8 and 300/4 (after getting the 70-200 II and 100-400, respectively), and for a decent profit in both cases. I still have the MP-E 65mm.
I agree, I've purchased almost every lens I have through Craigslist. In the last year I've gotten:
2 different EF 24-70 f/2.8 - One was $1050, the other was $1000
16-35mm f/2.8L II - $1250 w/$100 B+W filter
35mm f/1.4L- $1100
50mm f/1.2L- $1100
85mm f/1.2L - $1800 (not the best deal, but not retail)
70-200 f/2.8 IS (v1) - $1450
All of them were in great shape, didn't have any problems with the sellers, etc. CL is great for higher end stuff, camera stuff is so specific you would be able to tell pretty quickly if the person didn't know what they were talking about.