Years so far and I am still working on it. As all of you know the prices of them, have dropped significantly over the years. Chips that I never thought I would have obtained (such as the orange arodie) I have been able to obtain very inexpensively. Some I spent a bit of money on only to see them drop in price.
I hesitate to use the term "value" instead of price because for me, at least for this casino, its more about building my collection as a hobby not as an investment.