Greetings Fellow Cat Lovers

If anyone would know where, it would be this wonderful group that I read every day. I don't post very often, as I am at my work place when I checking out the cat of the day and reading the various posts during my lunch hour. The highlight of the day. Anyway, do ya'll (yes I am southern) know a really good online place to purchase front line plus for the cats and kittens. Short story, I care for 3 feral colonies in addition to the ten guys I have at home (they don't go out). I try to put front line on my colony guys, but man the cost is killing me, in addition to feeding close to 40 cats a day. So, you guys got any suggestions. I was buying at a pest control store, cause it was cheaper than the vet, but still high. Any help would be greatly appreciated. Oh, and yes I am spaying and neutering my babies, it is just taking time.
I really do enjoy reading thru the different posts and the wonderful friendships that are apparent when you read your conversations to one another.