I never heard about minerfarm before. It is a cloudmining sites and most of cloudminings are scam and none paying now adays. first you should submit a payment proof here. if you got payment from this cloudming sites then send us transection link or screen shot.. then maybe someone want to buy it...
Well it's actually a game. I have an account already but not yet withdrawn as it cost 50k. I have heard from one person that they do pay but thats some random guy on the net so who knows, i think they best thing is for the op to take a video of his account, if he wont then i don't trust this. Also he has not answered. Oh and 1gh miner makes about 1700-2000 a day so x7 = 10k-14k or so, in a month it will pay itself off, which i find suspiciuos.
Guys stay away !! Why ? On that website you can sell your miners for close to 0.01btc and he has 7 so 0.07 and he only wants 0.003 nope sorry its a scam its way too cheap, he could simply sell his miners online and make over 20x his asking price. DO NOT TRIS THIS GUY.