In many countries different prices are offered depending on the type of payment and are shown directly on the product page so that the customer can see which is the most convenient payment method.
For example, the price of a product is lower when paying in cash than when paying by credit card in installments.
Thanks for taking the time to share your query with us here in the Community!
I can confirm that it would not currently be possible to offer a discount, add a fee, or change the price of a product based on the payment method being used.
What I can do for you from here is file a request for this functionality with our developer team, so they know this is something our merchants are looking to see added to the platform in the future.
Any info you can share on what you’d like to be able to do (you’ve already shared some here), and why this is important to your business would help me to file the most relevant request for this!
Could you tell me a bit more about your business, what you sell, and who you sell to?