I've had this happen to Dante, Warlord and Carrion Throne. Not straight away it's worn badly while I've been reading them. Each time I've sent off an email and been supplied with a new copy, well I'm waiting on the new carrion copy but it's been promised. So now I have a reading copy and a pristine shelf copy!
It's pretty poor though. They are expensive books. If they weren't so pretty I would have given up on them at the first one.
I'm also assuming this is a recognised problem and they are sorting it out behind the scenes, so while they continue to replace the faulty copies I'm not going to complain.
So yes I would send off an email pronto