I guess you better should specify the size of the pot. In case you also can live with the portion price:
Chicken Biriyani is usually the cheapest one and the most common. Portion prices as from 90 Rupees upward. Beef Biriyani is on the second place: as from 110 Rupees Deer Biriyani is my favorite, but is rare and only available in the hunting season: as from 200 Rupees upward. Fish Biriyani ... I don't like it, so I have to admit that I have no information about it.
I suggest to invest a bit more for the a Biriyani than the lowest price . . . Biriyani is almost everywhere on this island available.