This might mean the $10/month is the best. Depends entirely on how it works for you.
(Caps obviously impact the total benefit so I agree there.)
Just to give you one example - last BigCo I worked for had a schematic for new projects which resulted in... 2k EUR per month cloud cost for serving a single static html file.
At one point someone up top decided that kubes is the way to go and scrambled an impromptu schematic for new projects which could be simply described as a continental class dreadnought of a kubernetes cluster on AWS.
And it was signed off, and later followed like a scripture.
Couple stories lower we're having hard time arguing for 50 EUR budget for a weekly beer for the team, but the company is A fine with paying 2K EUR for a landing page.
But it doesn't really matter, because the C-level has been consumed by the hype like nothing I've ever seen. It could cost an arm and a leg and they'd still be pushing for it because the bubble is all-consuming, and anyone not touting AI use doesn't get funding from other similarly clueless and sucked-in VCs.
They don't. They toss a coin.