He only invested 500 dollar ..just buy a miner for 500 dollar or a complete miner you dont even make a lot of bitcoin with a 2500 dollar miner ... just see this video about ROGER VER who deleted his tweet about bitclub network being a ponzie sceme https://www.facebook.com/XoCoHealthNL/videos/g.418965361803600/1522064351149579/?type=2&theater .... and yes if you dont understand this network business you need to read the backoffice info about bitclub network... i can show anyone that bitclub network is working ... so if you are intrested skype me Bigone0007 and i can show you the backoffice and more from a 500 dollar investment i made 0.5 bitcoin in 14 months .