probably a crap shoot......... It may turn out to be a decent buy IF you want to do some work on it first. Ten years sitting, probably with mix residue in the carb you're at least going to have to clean that out and possibly rebuild. Probably a host of other things to do before actually using it to cut with. If you're into the project aspect of it, go for it, but if you're looking for something to cut with next week I'd pass.
I picked up a similar vintage Sears last fall at an estate sale, haven't messed with it yet due to other more pressing projects, but will someday. So can't give you a review of how well they perform. Also parts availability may be an issue, Sears website did have mine in it's database with available IPLs, but actual parts could be another story.