I dunno man, older generally means more worn out - especially if its going cheap. On the other hand it might be a solid bike with plenty of life left that's going for a bargain price. Depends on its history, like how many miles have the crank and pistons done? We'd need alot more details on its condition really if we were to help you with the decision on this particular machine.
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After years of moaning about immigrants now i am one...