My gallon kit just arrived this past week and I can't wait to try it.
It may be pricey, but my understanding of it's capacity and the life of the mixed solution actually seems to make it economical. The cost for the gallon over the quart made the gallon a better deal.

Less expensive developers can turn out to be more expensive in practice. I rarely get through half of my d-76 before it goes bad and must be disposed of. I guess I should just use more film