I did a basic calculation online. Over 2-3 years I can; to the best of my understanding, given a $20k investment, guarantee at least a $30k return; which would

I did a basic calculation online. Over 2-3 years I can; to the best of my understanding, given a $20k investment, guarantee at least a $30k return; which would be a 50% ROI. It could be more, but it certainly wouldn't be less.