bass ackwards

i'm really not sure how amazon's shipping system works. i preordered Wrath of the Lich King a good two months before it came out, with regular shipping, and it got to me 4 days after the game released... which also happened to be one day after i went out and bought another copy because i got tired of waiting. last thursday, i ordered some beef jerky--a type i really like, but haven't been able to find locally lately. i chose the free "super-saver" shipping, which in theory is slower. the package shipped the next day, and was waiting for me when i got home from work. and it was shipped through the US post office, which is generally not known for it's speed. heck, it takes me three days to mail something from here to spokane, and i can drive there in less than three hours.