Re: PayPal is launching an advanced payment interface.
Its just a quick solution, thus I'm afraid no.
PayPal expects individual prices for items, but allows only 2 digits after the decimal point. Thus having quantity passed implies devision of the price by product quantity to pass to PayPal. But due to that limit the total could became wrong e.g. for 2 products $15.77/2 = 7.885 but only 7.88 can be passed as a price for the item...