I see some people complain about the BTC exchange rate Mr.Tango uses. I ve seen complains of your exchange rate being 20% below Preev. Can you please clarify what exchange do you use?
Mistertango does not exchange BTC themselves in any way. The exchange is done via btc-exchange.com (aka bitmarket.lt/lv/ee) and then the money (EUR) is send to your Mistertango account.
Our exchange has procedures rates, that vary but usually differ in between 0,0025-0,005 BTC as a minimum charge.
So if you exchange a really small amount of btc, due to that minimal fee, you actually may suffer a huge fee percent-wise.