I posted a link above where you can get the 5 liter size developer from Unique Photo. No blix involved in this process. Adorama probably sells it, too, as well as other places. I've gotten the same stuff from Adorama (and Calumet at one time.)Where does one get the Kodak stuff?
You purchase Flexicolor RA fixer http://www.uniquephoto.com/film%2Dca...2D5l%2D1077577
And make the bleach or purchase it. If you want to buy it, it is here : http://www.uniquephoto.com/film%2Dca...film%2D8255549
And you need stabilzer: http://www.uniquephoto.com/film%2Dca...inse%2D1925254
Note: I have no connection with Unique Photo. I just purchase from them for reasonable prices and shipping and they are close enough to me to go there and pick up product if I want to. They also have a good selection on their website to use as examples.
A little Kodak decoding: Flexicolor is C-41, Ektacolor is RA-4. They call everything "<something> Replenisher", like "Developer Replenisher". This means you use the same product as the developer as well as the replenisher if you are trying to use a replenished process. (Which you are probably not)
You use the Kodak CIS-49 document for instructions on how to make up small quantities. It isn't hard. Just google it. In fact, here is the link: http://www.kodak.com/global/en/profe...49/cis49.jhtml
If you store in tightly closed bottles in a cool, dry, dark place, the bulk chemicals will last for some time. I doesn't pay to be over frugal with them, however. Part C of the developer will go bad after awhile (monthsat least, I worked off a kit for 2 years before it crapped out) but there are things you can do to extend the life. The rest of the stuff will last a long while.
There's nothing wrong with the Digibase kit; it works well. Just gets expensive.