Lay's potato chips - money in packet 'competition'

I won !.. NT$50 ( or at least what ‘looks’ like NT$50 )… kind of a pink / purple color note with a clear plastic window on it and a gold embossed section in the window.

The question is… is this legal tender ?

Yes. It’s a rare “plastic” 50 NT bill. They made them only for a limited run. Legal tender, but most people keep them for the novelty. Waterproof money!

My son won NT$ 100,-, and promptly wanted to go and buy up all the stock in 7-11 to get rich…

Doritos had the same deal a while back.
Wasn’t there a commercial on TV with a guy using a metal detector to search for the metal strips in the money?
Tell your son to try this.