Can't wait for my bill to go up 3% to offset this. Might not being that T-mobile is probably big enough to absorb it but reward cards are the biggest scam out there. Ever since Sapphire cards were used everywhere, my local coffeehouse bumped up prices to cover the fees. Essentially, you're paying for your own rewards while the banks haul in the money from all the high fees passed onto the business who passes it down to the customer.
Your local coffeehouse is scamming you. The difference between the cost of a Sapphire (Visa Signature) card and a traditional card is 0.8%. So if they raised prices more than a cent per dollar, they're just making an excuse and lying to you.
(CPS/Restaurant) https://usa.visa.com/dam/VCOM/download/merchants/visa-usa-interchange-reimbursement-fees.pdf
3% is much over the rate the bank gets, which is in the neighborhood of 1.5-2%. Then the bank still needs to pay for the cost of interest, billing and overhead, bad debt and a profit. At 3%, the merchant is chipping in their own money, and not much. My other card has a promotion of 10% off at Starbucks, for comparison.
Essentially, what you're saying then is that sales, discounts and coupons, are a scam because the price will go up to cover them.