It's in nice condition! But it's entry level. So, your return won't be as high as if it's a more desirable Peugeot.
But at 5 bucks, even with the cost of a used crank and BB, plus a new chain, you should be able to at least double your investment.
i sold a carbolite peugeot (uo-9) for $200 in one day so i'd say definitely worth fixing up, though i don't know what the bike market is like in wisconsin