I've got a feeling that this PayPal widget works a bit strange. Usually, we input dollars/euros/whatever, then period, then cents. I'd rather say we almost never input cents. Is there a reason to withdraw 120.79$ instead of just 120$?
Though PayPal acts in their own way: when you input numbers, they appear from the right side populating cents first. So if I need to submit 50$, I'll have to input "5000" what is always unclear and forces me to check what I'm doing twice.
As a programmer, I understand they store and process money in cents what is really a good practice from DB perspective. But let the widget operate as if I was an ordinary user who doesn't need cents.