If you like it, get it. A comparable new bike would cost much more, and this bike is also ready to ride with new tires. A 60's Corvette would have S-7 wheels, which would require 26 x 1 3/4" tires. If they are 26 x 1.75" tires, maybe they put new wheels on it also. Or is it a single red band rear hub or even a 2 speed (3 yellow or redbands on hub)?
I would show $100 cash in hand and see if they'll take it. If it'ds been sitting there for awhile, they just might, or start at $80 and go up to a hundred.
I just looked at that coppertone bike. Awesome! I'll bet those fenders have good chrome under that white paint. That looks like a good deal.