Bitstamp is now offering 2% share for some 1.1M EUR
https://bnktothefuture.com/pitches/bitstampIf you make a quick calculation 50*1191870[USD] and divide by daily trading volume of 5M*365 days*0.1% fee, (1191870*50)/(5000000*365/1000)=32.65, so it would take 32 years (or 16 assuming 0.2% avg fee) to pay back. Of course it's likely the volume will go up, however BTC price will do the same
Therefor I think it's way better to simply buy BTC.
Every single time i tried to calculate investment value at bnktothefuture it became obvious they are looking for dumb money, haven't seen a single investment opportunity worth trying.