So basically you get the first one with a discount, then you pay the usual price unless the battery is bad.
Makes sense to me. The important thing is being able to replace the battery for $29 at least once even if their diagnostic test says the battery is fine. I'm planning to change my dad's iPhone 6 battery later this year, it isn't really bad but the phone is more than 3 years old and it ought to have more than 1000 cycles. By replacing the battery the phone will continue to work with a decent battery life for at least another 3 years
It's almost shocking to read through comments on posts such as these and find one that's coherent and rational. kudos to you, sir.
I'm thinking the same way - it's more than fair and I don't think I could ever level with someone prepared to find something wrong with this.