It's precisely because XMR is in high demand on eXch that our reserves are so often empty, in particular because there are many backorders which are often draining our liquidity. XMR is in high demand on eXch because we provide a high-quality service respecting your privacy, we aren't doing anything wrong.
Weird and interesting at the same time. But the result is that your treasury is still empty. You probably have the wrong prices set for your services.
(By the way, I don't think that comparing the demand for a coin on eXch with its market price is the right way to think, especially for XMR)
With your displayed 24h volumes (which are absolutely unbelievable) - you are the biggest exchange on the market (with an empty treasury - ironic). So the price of Monero is set (according to you) mainly by you. There is obviously some mistake somewhere.