worlddan: [snip]
In both cases I was charged a one dollar service charge from Paypal. This service charge is not displayed anywhere on their websites nor is it displayed on the Paypal checkout screen but it does show up on my credit card billing statement.
[snip]
This has happened to me before, even with GOG. Typically, it is your credit card charging a conversion fee from $ to $ because the receiving bank's base currency is foreign. The transaction fee typically varies from 1% to 4%. There are a few credit cards that don't charge this fee, so shop around.
In my case, I bought something for $1 Friday, and it appears to be just $1 and the transaction is settled.