Yeah, that was then. That workaround doesn't work anymore as far as I can tell. Now they revamped their site and got a credit card processor so paypal can only be used as I stated above. Or you have to buy a gift cert with paypal and then pay for your order with a gift cert. They allow custom denominations of gift certs now, so you can buy a gift cert for 10.12 if you want.
The other day the credit card processor wasn't showing up for me. The only options I had were gift certificate and cryptocurrency. The one advantage of GC is, at least for now now, is that you get a 3% rebate added to your purchase. I just calculated how much I needed to buy so that with the added 3%, it came to my order total. It save me a buck and some change.