You don't give specs, but if the condition is good and it fits you it could be a good choice. Of course the price should reflect the specs, so get an idea of what it sold for new, and use that as a starting point.
Since you're nor knowledgeable, have a friend who knows bikes come with you to check it out and estimate what any necessary work may cost. That's very important because repairs or replacing worn parts can be expensive and make what seemed like a good value into a money pit.
Good luck.
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