Hi,
No scam here friend.
I have also upgraded twice and on both occasions have benefitted from it.
My 2nd upgarde to the new r9 driver ( $7.50 ) certainly has gained me quite a few yards off the tee. So - It really does make a difference. But you need to PRACTICE !! That is key. I'm still trying to get use to my new r9 driver, but it aint easy. However - I just shot 73 on BB so am getting there :-)
Cya on the practice fairways.
Cheers Doug