if i go to the service station form my house, I go get e10 petrol, at 99c. I fill up over $40 . I buy my self a chocolate for $2 that's a total of $42 spent, same as (10k initial investment) I then receive a free chocolate bar worth $2 ( making that 11k 10%) I then the next week do the same thing I now have 2 chocolates in my fridge worth $4 ( 1k each investment) they were both free. My daughter asks me if she can have a chocolate I then tell her she can have it for $3 (1.5k free carried) But while she was eating it I ate the other so the other initial (1k free carried went bust) but it tastes better when I didn't pay for it.
