While I didn't really go over every chip and value I think you would have done better just buying the 25 chips that you wanted separately. Personally I wouldn't layout/invest 1000 dollars for a 500 dollar possible profit. It will not be worth the time and hassle for such a low return on your money.

I have bought collections in the past. Most times happy. Sometimes wish I took the advice above.

Regardless enjoy and have fun.
Barry