I actually replied to this yesterday when you posted but the newbie rule of only 5 posts in 24 hours thwarted me. So be it.

Anyways, if you're still considering buying this crankset, I say go for it. The chainring looks fine provided it's still true and everything else looks good for a used set. I wouldn't pay the full $300 asking price though. It's 'or best offer' so there is some latitude there.