The problem with ATT prepaid is it's deprioritized to the same level as mvnos - might as well buy an even cheaper mvno plan at that point.

Tmobile is the only big 3 carrier where all branded plans have the same priority

They've changed the plans a bit, you can get 8GB even cheaper I think. I pay $30 a month after the autopay discount. Though mine is only 5GB

This is ridiculously expensive from the point of European prices.