[quote name='shrike4242']When they

ed up on the price of DK: JB with the bongos ($34.99 instead of $54.99), they honored it, though it took a lot of convincing.
They normally do honor their pricing mistakes, unlike GS, as we all know from the whole Colessum crapfest.
And $10 isn't that much of a pricing mistake, anyway. If it was $9.99, I could see them saying no.[/QUOTE]
With the DK with Bongos thing, though, they kept the low price but did a sneaky thing and switched orders over to DK without Bongos, IIRC? Wasn't exactly honoring a price...they switched items and you had to contact them and prove the error to get the proper (more expensive list price) product.
I know they honored the Def Jam: FFNY error, so there is a precedent:
http://www.cheapassgamer.com/forums/showthread.php?t=2624&page=1&pp=20
I would expect them to honor this deal, too.
However, this is a new EBgames, one who bails out of rebates/vouchers, so they could cancel.
Also, consumers have nothing to lose on this if they get up-charged, as they can always dispute the charges.