My son got a couple Stihl MS170 saws where he works... they were customer (idiot) returns. $80 for both of them. One guy couldn't start the saw and the other insisted the oiler didn't work... even after they replaced it in front of him to appease him. There really was nothing wrong with either saw... just the operators.
I had my son order Stihl OEM side adjustors, bumper spikes and muffler gaskets for them. For about $140 we got two like new saws that had sharp chains. I took mine a step further and opened up the muffler... it is noticeably better than stock. I had him order the muffler gaskets as I noticed that both saws were leaking exhaust and oil between the cylinder and muffler. For me this little saw adds to my saw progression.... MS170, MS261 and MS461. I used it last week to cut up pine tree branches that an ice storm took down. Nice little saw for such tasks.