If you want to feed pre-made raw, definitely try to find a local supplier, shipping frozen food is expensive!
Also, do your research, not all pre-made raws are created equal, I decided to go with Nature's Variety because it was recommended by Lisa Pierson on her web site and because it doesn't contain any of the nasty stuff that I've been told to avoid and because I found a store reasonably close that stocks it.
If that's not available or affordable, you can make your own, I suggest following a recipe like the ones availabe on Dr. Pierson's web site. You do not want to try to figure it out on your own, determining the proper balance of muscle/organ/bone/supplements/plant material is very tricky .. and if you get it wrong, with long term use, it could cause malnutrition.
Someday, I may start making my own raw, when I feel like shelling out the money for a good meat grinder, the supplements and a supply of chicken hearts
And last, but not least, this is a big decision, if your kitty has any chronic health problems or a supressed immune system, talk to your vet before making diet changes.