[quote name='Tryxx']Agree. I'm also confused about whether it will work like a gift certificate or if it's like that $40 code they offered a while back that has to be used at one time or any remainder will be forfeited.
I got the email this morning saying the code has been applied to my account, but it's not in my GC balance, and I've clicked on all the links with fine print and can't find anything that says if it's a use-it-all-at-once-or-lose-it or if it will be available through the expiration date even if you only use a little at a time.[/QUOTE]
It doesn't have to be used all at once. However, there's no way to see how much promo credit you have remaining EXCEPT to proceed to the submit page with items that exceed the amount of your promo credit.
e.g. if you have $30 in promo credit left, and your cart contains $31 in merchandise, the submit page will show a promo credit of $30.
However, if your cart contains $18, the submit page will show a promo credit of $18 and you'll have no clue you have $12 in promo credit remaining unless you buy something else or manually keep track.
Also, it appears that if you try to purchase a Lightning Deal that is regularly priced at less than your promo credit balance, it will deduct the higher non-Lightning Deal amount from your promo credit.