I, in the other hand, have almost no access to those E6 kits with a reasonable price. So, I am making my own makeshift E6 alternative as we speak. Bleach and fix are from minilab C41 and replenisehd as long as I have access to that minilab, stabilizer is also from there but with added touch of formalin for dye stability and the developer is something I mix from bulk chemicals. I also do ECN2 developing at home and the developer seems pretty close to the E6 one. So far the experiment I ran came out magenta but pH measurment showed me that the developer was at pH 9.4 and I am surprised it still worked. E6 color developer is meant to be pH 11.1, whereas ECN2 is 10.25 and C41 for comparison is 10.0. I c o u l d buffer the solution to 11.1 but that would turn my negatives green. Instead I am going to try alkaline treatment to film before color developer - I'll let you know how that worked out.
Oh and the first developer? Fuji Papitol, 40 degrees centigrade for 4:30. Any paper developer should work; Papitol also gives nice fine grain.
And why ECN2 developer, why not the real deal? ECN2 developer is dead easy to mix, the only tricky ingredient is CD3 (same as in E6 and RA4 developers!) but if you are lucky and live in USA, you can get some from Formulary for peanuts, whereas I am in trouble getting it cheaply in EU. You can skip the antifoggant and anti-calcium, just use distilled water. PE might say that the developer goes bad very quickly but I have managed to deplete it before it even had to chance to go bad, kept it maybe for a month and a half.
Overall, it is quite a hack of a process but hey - I am getting slides and it is not costing me very much.