Treatment lasts 12 weeks. Of course, tablets have a bit of a disadvantage in dosing accuracy, as it is very difficult to break a tablet into smaller parts than quarters, so the real price will be a bit higher. You never have to buy medicines for the entire treatment at once.
But in general it can be said that medicines per day they will cost approx 35 – 125 CZK (1.4 – 5 Є) on the 1 day and 1 kg live weight of the cat. The large price variance is related to different forms and brands of drugs and especially to the type of FIP, on which the dosage depends.