How can I find out the value of a pair of promotional "DQ" glasses about 40 years old?

Question

They are frosted glass and are about 7" tall and 2 1/2" across. They have the DQ design in turquoise and red scaterred on them.

Answer 1

I don't know about Dairy Queen glasses but I checked on E-Bay and found the value of the toys that Burger King put out in the early 80's and then four them as a set for 500.00. So I kept them. Maybe they'll be more later.