I find that I can not beat my local Wal-Mart to develop 35mm. With tax it is under $2 to develop only, I wait for it and cut the negs myself and put into sleves. This is for 35mm though. For sheet film there are Kodak publications that have temp drift charts for those who have no stable temp control, these can usually be found in Kodak books in most libraries.(posted 8292 days ago)I have done much E-6 with a tank submerged in a large pot in the kitchen sink, though I always wondered how gas I was using to run all that hot water to keep the temp constant.