How much is a 1987 nishiki olympic 12 speed worth?

Question

has been stored in my garage for 10 years.

Answer 1

Im not sure how much it is worth. It all depends on the condition. If it is in good ridable mechanical/cosmetic condition with dryrotted tires, and bad handlebar tape i would sell it for 40 to 50 dollars. If it has good handlebar tape 60 dollars. All fixed up, and cleaned with new handlebar tape/tires 85 to 100 dollars. Considering its an Olympic which is a higher quality 100 dollars.

Answer 2

Unfortunately, very little. They were good bikes in their day but technology has passed them long ago. Most have now been relegated to "rain bikes" or trainers.

I would suggest that $40 is a reasonable asking price... but take $30.

Answer 3

It won't be worth much if you are trying to sell it.  It doesn't have all the bells and whistles like index shifting or clipless pedals that the new bikes have.  That doesn't mean it isn't a good bike.  Pump some air into the tires and ride it.  It is worth fixing and using it yourself.