Stihl FC75 Edger Repair Advice

I looking at possibly getting a used Stihl FC75 Edger. The seller says wants $50. Says that it doesn't run. Supposedly needs a new carburetor. $50 a good deal? How old are these models? Assuming not making this model anymore?

I know that carbs are cheap online. I believe that Stihl uses Zama carbs. Correct? Are the cheap aftermarket ones online just as good? Do you pay what you get buying them online?