It’s $10/mo and then like 15min/$50/mo in everyone’s time in admin chasing down and filing receipts, reconciling to bank statements, etc.
If you’re a founder doing your own finances, well every additional little monthly charge even if it’s just $1 is quite annoying:
Filing and reconciling 12 receipts takes say 1 hour per year, what if you’re using 20 dependencies? That’s an extra 3-5 days per annum of admin.