This is pretty typical for most not-amazon (or amazon-competitor) stores, I've found. It's why I am so reluctant to use third party sites, even though I know it's for the better if I do.

Newegg I've found to fulfill the Shoprunner "two day" shipping promise pretty reliably. I actually get a lot of stuff the next day due to being relatively close to their Indiana drop-ship partner/warehouse/whatever.