Can't Use e-Gift Card with a Quote

Hey guys!

I'm having some major trouble with a purchase. On Thursday (four days ago), I got a quote from a chat-based sales rep for a Chromebook 13. I couldn't buy then because I had to wait until my gift cards got consolidated. (None of these are promo gift cards.) Today, I checked and the gift cards were consolidated (yay!), so I looked up the quote to complete the purchase. There was nowhere to enter the gift card and apply it toward the balance. The only mention of gift cards I could find was in relation to (and conjunction with) a financing account. I didn't want to sign up for a financing account, but the word "gift" does not even appear on any of the other pages up to the final checkout button.

I talked with someone in chat, and he said to select "Gift Card" from the payment types drop down. There is no such drop down that I can find. The payment page has text links to the different forms of payment that each have their own page. I tried selecting the "Pay with two credit cards" option, but Gift Card does not show up as a credit card option here.

Soooo... how do I apply a gift card to my balance? Am I unable to use a gift card with a quote? Or do I have to apply for financing to use a gift card?

Thanks for any help you can provide!