Yes. At least, that's what the site says when you are in the cart.What do you mean? They charge you the full price on the credit card until the trade-in is processed?
You can use your BB credit card and I suppose they credit you after it's processed, sometimes they offer you a gift card with the purchase... but that's separate from the trade-in.What if you don't want to use a BestBuy credit card? Or do they send you a VISA/MC gift card for the value of the trade-in?