A:Answer I believe if you get into checkout (get it into cart, go to the cart, then into checkout) then the item is reserved until the window times out so it can't be sold while you're buying it.
Click on the user button in the top right, click "credit cards", and you can add a card as a payment method there. It will still ask for a couple bits of info in checkout but it significantly speeds up the process.
If your card is rejected check your bank's fraud prevention to see if they stopped it, tell them it was you, then try to purchase again. It won't double charge because approving it through prevention does not count as purchasing the item. This takes some time so watch the window and don't let it time out or you'll be sad forever. My bank told me all purchases from BestBuy are flagged for fraud because of a high amount of fraud on BestBuy recently but this may vary with banks.
