Have to say that it is fantastic offer. My better half (Gold) also got the offer. However we just could not spend $7500 on credit card in first 3 months. I just could not see it happening in our household.
Paypal is considered as retail purchasing. So send $7500 as a gift to your wife/other and then pay back your account using the bank account.
You will pay 2.4% in fees, but its completely legit