Originally Posted by Gig103

The first one is probably a rounding issue on the taxes.

For the second one, are they the same fare bucket? IAP isn't always a straight discount on the lowest available fare, it is its own inventory. I can't say I've ever seen it be more than regular, but I've also had the phone team tell me IAP was unavailable, and they've also found IAP fares with a $0 cancellation fee. I've also seen weird things where if it's a DL ticket it costs differently than if it's a KL ticket operated by DL. The last one isn't your situation, just a general point that IAP isn't straightforward. I don't think it's an intentional scam though or they wouldn't be showing you the non-IAP.