iSatori teamed up with Europa to put together the temporarily titled Muscle System. The supplement went on to have several claims thrown at it and eventually launch with the name Bio-Gro. The controversial product started showing up last week shortly after the brand directly released the ‘game changer’ in a limited edition stack. Unfortunately despite iSatori’s early April mention of the Muscle System sign ups totaling a quarter of a million. The 500 double Bio-Gro box sets have not been sold. It seems that not even 1% of all those people interested are willing to pay $120 for two tubs of the supplement, including the extras. iSatori can only hope they are a little more warming to the individual $40 retail price.