Saves 2.5-3% credit card fees (> 50% of payments) and 1-2% in exchange fees for KYC. No-KYC carries a 5%+ premium.

So each sale settled in sats is ostensibly worth up to 8% more than it would cost in the market to acquire those no-KYC sats P2P and that doesn’t include the time and effort it takes.

A 5% discount for purchases settled in bitcoin and the merchant is coming out ≈3% ahead of fiat credit card txs and getting instant control of funds with no ability for claw backs.

There is room and economic incentive to offer bitcoin discounts.