For small businesses like you and me, yeah, this seems like it should be a very simple fix. PayPal is a big ship, and big ships turn slowly. They've got road maps planned out for a while already, and adding stuff like this would be difficult. Especially on deprecated APIs. It's just not going to happen. We are the builders of PayPal for WooCommerce. WooCommerce allows you to use fractional quantities. We give our users the option to either skip out on sending line item details to PayPal at all, or allowing us to restructure the request so that it will work. The true details are still available inside the WooCommerce order itself, so there is still record of all those details, of course. I've worked with Stripe, Authorize.net, Group ISO, PayLeap, MojoPay, and quite a few more. I honestly can't think of any gateways where the QTY field was documented as allowing fractional values (but I could be wrong.)
... View more