It's not really a fine for using the counterfeit stamp. After all, the recipient pays it and they had nothing to do with acquiring or placing the stamp whatsoev

It's not really a fine for using the counterfeit stamp. After all, the recipient pays it and they had nothing to do with acquiring or placing the stamp whatsoever. So it's not really a fine in the criminal sense. And I assume you don't admit any wrongdoing or avoid prosecution by paying it. It's more like a processing surcharge.