HEADS UP ON PAYPAL FEES CHARGING WRONG

I've been in business for myself for 40 years. ANY cost above the sell is added back into the original cost, taxes, fuel, shipping etc. The customer doesnt see these cost, out of sight, out of mind. I'm not paying someone to buy my product. Every successful business works this way. PayPal is just charging you to sell your part by a medium you normally wouldn't have, I think that's fair