I make 3 packs: Blacksmithing, Engineering and Alchemy. They contain all of the mats necessary (with the exception of soulbound mats, obviously) to get you from 1-600.
The prices of the packs depend on current AH prices because I try to price my mats fairly close to AH levels. You're mostly paying for the convenience of having all the mats at once. But in general an Eng kit is around 15k, a BS kit is around 25k(it's an obnoxious amount of mats) and an Alch kit is around 8k.
I'll be on Muradin soon and I'm bringing fun things!