kapusta: If it cost more to make homemade ice-cream than to buy ready-made C”Y, then by definition it is obviously more than ready-made C”A (which is cheaper than C”Y).
Huh? I was trying to say that making C”Y ice cream costs more than buying ready made and using C”S products to make it would probably cost more also than buying C”S ready made (especially since major supermarkets usually have it on sale). What was your question?