Originally posted by stevebrot Reminds me of Ferrania! Woo! Hoo!
I had to google that!
Regarding Tmax developer, I also thought it was "one shot" and therefore very expensive. But as Tuco says, you can use it a few times with extended time for ever new roll you develop. The bottle sticker says that 1 liter of working solution should be good for 12 rolls, and I'm using 0.4 liters for my small stainless steel tank. So I'll run 5 rolls through it before scrapping.
Edit: I suppose that when the working solution is getting more exhausted, it resembles a more diluted solution. If that's the case, the results will probably change a little bit with the use of the developer over time. More diluted developer often gives more of a compensating effect (stand development is this, taken to extremes).