There is a 30 day money back garauntee...becuase its probably a 60 minute workout... and it will take 30 days for you to notice the difference. I wouldn't pay money for it. I could say that I can make you play faster than Yngwie in 60 minutes and give you your money back if it doesn't work in 30 days... but if 10 people pay me 30 dollars... that's 300 bucks... then it doesn't work for 5 of them... I still made 150 dollars with a bunch of BS. haha........ hmmmmmmmmmmmmmmmmmmmmmm ???