The card excludes "Holiday Promotions" such as the Beocom 5 package which is the 3 BC 5 handsets , 2 charges an a base and Beoline 2, but I think a "single" Becom 5 purchase which is not a package discount would be considered a pre-order and not a back order, if you purchase before the actual release date of a product.
Most everything purchased at the B&O store that is high dollar is ordered and therefore could be considered a backorder, simply because they don't have it in the store at the time of purchase. I'm sure someone ordering a new BV-4 or BV-7 would be allowed to use the $100 gift card, since dealers typically don't have plasmas or BV 7's stacked up in the backroom.
My card shows an expiration date of 1/31/2010. Don't give up dealers want to make sales....Give it a try!