Our cat only has dry food - for years and years he was on Science diet (whatever was applicable for his age/weight) recently we have had to change to Royal Canine brand as they are the only one that make a hypoallergenic as he suffers from blood in his stools with the other brands now.

It costs around $65-$70 for a bag of food but as he only has 1/2 - 3/4 cup per day we find a bag lasts a long long time, plus you don't have the issue in hot weather of having wet cat food out for the ants to find.