For making the payment of your order
go on GRECO STORE webpage
to the right, below PRICE, there is PayPal button "PayPal BUY NOW": by clicking on it, you will open a PayPal payment page GRECO STORE s.a.s. > PURCHASE DETAILS where, inside "PRICE PER ITEM" you have to type the price of your purchase ONLY*
and after, you have to click on "CONTINUE" for proceeding with your transaction.
* you must not type items, quantity, etc.