How do you handle the volatility? Lets say product x costs 12.000 muxe tokens today, but price of token increases by 25% within an hour

That depends on the situation. Let’s say we talk about a feature at the MUXE platform which in Fiat currency would have to Equal 10$. Then the price would be decided by for example Market Value + Discount % in MUXE tokens. This would normally go through calculations of the latest 24/7 price rate.