question about the ebgames Trade up to the Next Gen promo

[dude1]

this is the promo where you Receive $100 in store credit with the trade in old game consoles that apply
i have several xboxs so is this deal stackable?

[dude1]

bump

[demha88]

only 1 console will get the $100, the rest they will give you like $50 or something (if they are complete systems)