Allow configurable excluded Dodo provider charge

let’s say i have a subscription of 20 dollar. dodo already have tax excluded pricing which is good. so tax already gone to user. but what about dodo charge. in that case we should have a option to exclude dodo charge, which auto calculate ( the math to calculate is simple for example (amount in dollar + 40 cents )/0.96 ) dodo charge and add it on checkout or plan preview or change. or i end up with less money i have.