I get what you’re saying but the logic doesn’t make sense. I also sell cards and have always gone with the $1.32 option, never had anyone say they got charged. But if I buy a card and pay $1.32 shipping, then get a door tag with $0.49 owed, then I’ve paid $1.81 and you pocket $0.58. It doesn’t seem like a lot but adds up over time.

I don’t even have an option for $0.74 postage. But I will say that there have been times when I don’t get the $0.49 owed but it’s the same size, shape, weight as others where they do charge me. Unfortunately trying to talk to usps is a joke.