### Comment:
Except if you buy something for $2 and sell it for $10 you made $8. Which is a 400% gain not 500%. 
  
 Think about it, if he doubled his money to four you wouldn’t say 200% gain. 
 2x2=4. Two times your money is 100% gain.

### REPLY:
Right. My brain wasn't working yet

### END.