When it comes to cash gifts, service fees and taxes are applied to the base price of a cash gift. On my earlier wishlists the buyer paid all the fees and taxes (totally around (5%-10%) based on how expensive the gift is). It’s would be so much easier to set the price for the gifts this way. If my coffee is $10 i see $10, the buyer sees $10 but when they add it to the cart the fee and tax applies.