Wouldn't it would be great if pricing was simpler. I work for a Cloud provider too, and I keep pushing for simpler pricing models. My team/service does actually uses simpler per unit billing with no tiers or region. Discounts/contract rates are applied at account level at but any client could easily predict their actual cost, if we provided them realtime before-discount cost.

But other teams seem to replicate AWS pricing models, I assume to stay competitive with it.