I would like to cover the payment processing fees using the aMember inbuilt tax rates. I can see I can change the tax rates depending on state/country - can it be done depending on whether the member is paying through PayPal or 2Checkout? If I wanted to add 5% to all PayPal payments and 6% to 2Checkout payments, is that possible?
Create separate products and signup forms for separate payment systems and include processing fee in product price.