Instead of using bisq's price as the de facto monero price, simply set the price yourselves at whatever you want it to be since you have more (real) volume than any monero exchange on the market, including the centralized exchanges.
This wont work for several reasons.
The first is that monero volume in the last 24h according to
coinmarketcap was $140,037,146 XMR, and exch.cx only has 77 XMR in its reserves.
Exch.cx is just a small exchange. Kraken, Gate.io, HTX, Kucoin etc are much bigger