How much would you pay for a duct tape business card holder?

*Feedback required* I have learned how to make duct tape business card holders and find it quite fun. I would be interested in ocassionally making batches of them if people were interested in buying. I would love to get your feedback on this. How much would you pay for a duct tape business card holder? Would you be interested in plain black ones that resemble low-key pleather? Or would you be more interested in other colours and patterns? What other duct tape-crafted items would you be interested in buying? Thanks for taking the time. I appreciate your assistance with understanding if this is something that people would like. Happy New Year!