I am using the 5 litre Digibase kit
It cost USD $133 including shipping from Germany to USA
It will give me 5 sessions over a year or so
I am ready for the 3rd session now.. I accumulate about 8 rolls of 35mm and 120 per session
So I will get about 40 Rolls total.
It is a lot of work though, it takes most of a day to set up, process and clean up and it gets a bit tedious.