But how will it work?

Say a tyre is $500 - 1BCH (assume)


tomorrow 1 BCH is worth $1000, so will the tyre be .50BCH?


They will accept Xcrytos, but as the price will fluctuate to $, will the price change as well, as $ fluctuates with £ Euro, but the tyre will remail $500.

So at the end of each day, will they just selll all the cryto and change it dollar? or will they just accept the cryto and keep the prices same and take in the profit/loss.
how will it work?