Probably posted a few times however I noticed;
Premiere costs only 7$ whilst Investor costs 25$. However if you purchase Premiere for 7$ you also get a 10$ discount if you wish to upgrade to Investor at a later point in time. Subtracting 10$ from 25$ and you're left with 15$ which is then the price you have to pay to upgrade further (to investor).
However that means that if you add 7$ + 15$ you are actually paying 22$ to become Investor hence you are actually paying more to directly purchase Investor then to re-route and pay for Premiere then Investor.
It should rather be the opposite in my opinion.
Cheers