What is this? An eXch clone with zero liquidity?
First time I noticed eXch (which was years after they started), they had about $1M in reserves. Last time I checked them, it was $50M. The anonymous exchange business can be profitable, which means reserves grow quickly once people start using it.
Not only that, even a 1.5% fee (3.5% for Monero) can be charged without a problem, so even if the fees increase, it won't be a problem, but adequate liquidity must be provided.