Why do I have a $1 charge from Gumroad?

When you attempt to make a charge with Gumroad, we send over a request to your issuing bank for either a $0 or $1 authorization (depending on the bank) to verify the card.

The authorization request is reversed immediately, and is not a permanent charge. Some people may still see it on their credit card statement, but rest assured that it will disappear in anywhere from a few minutes to a few weeks.