AWS and Azure both have pretty straightforward free tiers, but people end up accidentally racking up large bills anyway. A UI to see a list of running services, sorted by cost either doesn't exist or is not prominent enough.
It's slow, you can't open links in new tabs, one wrong click and you have navigate to the right page and wait for everything to refresh again, but you can get the list of billed items. Plus a "Other subscription charges" that contains some mystery costs not linked to anything.
Hard to believe that really is the case for a product targeting serious customers in 2021. Doesn’t that make a surprise bill still possible?
And it makes sense from a growth perspective: new products grow revenue, bad billing systems only annoy customers (but mostly invisibly).
The UI to see a list of running services, sorted by cost is precisely what Vantage offers (and more)
It can be really frustrating and annoying when you can't hunt down where costs come from.