For those who are doing paid ads on platforms like Meta, what is your typical CAC?

I watched this video yesterday and it makes sense if you can get the right CAC and matching initial customer payment.

SO yeah - that's the context for why I am asking. 

Would love to get a feel for benchmarks. 

I realise this is SUPER broad, as, there will be folks here doing B2C, B2B, Enterprise, etc. 

So perhaps when you respond, give a feel for what your monthly revenue is for that customer for context? 

Appreciate the input as I think this through - and hope maybe it inspires some others too!