Thank you for reaching out. My apologies for the delayed response.
This small additional handling fee helps Tophatter operate and continue to improve our business. I have no insight into your account from a rating platform to address why charges weren't applied to other orders. To learn more visit our FAQ What is a Service Fee? Here https://help.en.tophatter.com/article/589-service-fee
If you have a question or a concern, customer support agents are available to help via email by signing into your Tophatter account and going here: https://tophatter.com/support/contact?topic=Buying
or by sending us a direct email to email@example.com