The 475 rolls of 24 exp is if you're running a replenishment line. If you don't have enough throughput to justify that and instead are using it single shot, you won't get that much. I mix up 2/3 liter to develop six rolls at a time, and the developer (which is the limiting component) mixes up to a total of 12.5 liters IIRC. In other words, with single-shot I expect to develop (12.5/.66)*6=112 rolls max. Nowhere close to 475, but it's still less than $1 a roll and the teenager at the minilab isn't scratching my negs or getting fingerprints and dust all over them.