Yes I think you can put a $$ number on certifications. Some definitely mean guaranteed value.
None guarantee value. There is no cert that has a guaranteed ROI for everyone, absolutely none. Some are more likely than others, some have almost no value ever, some are almost always a loss. But you definitely can't say that they all have value, there is always someone high enough in any field that even the top cert, even every cert that there is, combined won't raise their salary one penny or open a single greater door. But every cert, every single one, has costs that need to be offset by something. Cost in money and cost in time.
Even the absolute best certs out there carry a reasonable amount of career risk. Maybe not a ton, and it feels good to earn the cert, but there is still a solid potential to actually lose money. Not that money is the only factor, hence why I said to put a dollar sign on the personal satisfaction to having the paper.
It's funny, one of the coolest certs I have gotten has zero marketability value, but taught me quite a bit. ECSA was fun, but nobody has heard of it.
If you have a popular non tech cert like CISSP you are instantly insanely more valuable. CISSP probably increased my value more than any other certification, but it was not technical nor fun.
Then you have certifications like Azure which is nearly all practical (like my ECSA was) and you build out an environment in a virtual lab. Then microsoft grades your lab at the end. Obviously a test like that proves you have competency.
Finally, you have some gimme certs that require very little studying, but provide high value in employment searches like AWS CCP or CSSK. Both highly sought after, but fairly little effort to obtain. CCSK was definitely a good one even though it was not alot of material and I respect it.