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?
I don´t work for Mistertango, but I know that they use the following exchange:
http://btc-exchange.com/You could sell 0.5 BTC at the following rates as of now:
Bitstamp 9235.84
BTC-Exchange 9038.03 (there are a few offers that are even cheaper, but they are <0.001 BTC therefore not really relevant)