FYI for future folks. My initial GC purchase from Best Buy was placed on hold for unknown reasons (maybe because I tried to check out with PayPal?). Regardless, I called Customer Support and they cancelled the order for me. Unbeknownst to me, this set up a loop in the system where it wouldn't let me repurchase a new card right after cancellation. I made 3 more attempts that were accepted and then auto cancelled. Support even manually issued an invoice for the GC that was accepted and auto cancelled. The only option seemed to be to wait 2+ hours for the system to update and allow a new order. (maybe). While I waited, the items I wanted went out of stock anyways, so who knows how long I would really have to wait.
Not a huge deal in the grand scheme of things, but something to be aware for others. If your order is cancelled or doesn't go through, may as well give up for the day....
Thank you for coming to my Ted Talk.