Based on an online COLA inflation calculator, if you spent $50 for the set 32 years ago, their break-even value today is $108.54, or a little more than double.

So, if there's a demand for them at $22 EACH (rounded) then it was a break-even "investment". If less than $22 it's a loss; more than $22, it's a profit.

But considering casino chips & related items as an investment is dicey in most cases anyway. The tried & true advice that it's a hobby, and to enjoy it for the fun, is my guide.