you should really get these kind of data straight from the source when you can. stastica is sometimes useful for some hard to get metrics. this is not one.

https://investor.fb.com/investor-events/event-details/2021/F...

this is their q1 earnings presentation https://s21.q4cdn.com/399680738/files/doc_financials/2021/FB...

US/CA arpu is $48.03 for just q1 (just 3 month not for the year). Global arpu is $9.27.

there's no way $3/mo makes any sense.