However, we are considering to keep 5% on selling XMR in future because our service is now used by many other services with a purpose of mixing, therefore it's absolutely inconvenient for us to work hard acquiring XMR then give it away for nothing to some other service that makes considerable gains based off our hard work acquiring XMR. Same for users who only use eXch for mixing their BTC through XMR - we don't consider it honest when some of them complain about 5% for the level anonymity they will take from our service without recurring to chaining their funds flow through different services that might cost them far more than just 5% (and who are often eXch's resellers).