I have a few rolls of reversal film and two partial boxes of 4x5. So I'm thinking of giving E-6 a try. But it appears it costs so much to get all the chemicals for E-6. It seems it is better for me to sell the films and forget about the nice E-6. I won't have the volume to justify the cost. C-41 is not an issue since I already have some of the chemicals before and I do shoot color negative regularly. What is considered a decent price to get 135, 120 and 4x5 developed? No mounting. Film are Fuji Velvia and Provia.