>>3859975You're always going to save money in the long run. Buy film at larger quantity for the same reason.
>>3859986Remember the shelf life of XTol. Except for few occasions, I use dil. B at 10 ml per film. That makes 100 films per bottle, so as you say ~30 cent (eur). What also makes HC-110 the better developer is its versatility. You can use it as a normal developer with short times even when pushing, or you can use it as a compensating developer at high dilutions. HP5+ stand in Rodinal looks like ass, but in HC-110 (1:100) it's ok and the negatives print well.