About 5 years ago I bought a Basically brand New 026 off ebay. Came with a case, 2 chains, stihl tool, and rat tail. all shipped for $315. I thought that was a decent deal since a new one cost $400 at the time. A year later I answered an ad on CL for a "chainsaw - $75". Went to look at it and it was faded from sun, no bar, no chain, didn't run, but I felt it had good compression when I pulled on the rope. 3rd pull broke the rope. I offered her $25 bucks. I bought 2 bars, a few chains, new rope, cleaned the carb, new gas and oil caps, and had to buy a new magnito. All for $180. That saw happened to be an 034AV.
All that to say I've had good luck on CL and Ebay but would definitely prefer CL since you can put the saw in your hands before you buy. Ebay would probably be fine now if you can find someplace to actually put your hands on the saw before you bid.
Good luck.