Dear friends, can you give me some additional advice? [View all]

[Paper Roses]

You may have seen my post a few weeks ago about my cat and her allergies.
After about 8 years and $3000, the vet now tells me that I might have to put her on a "Hydrolized Protein diet. I have spent so much $ on various cat food upon their recommendation. Now it is just beef..no poultry.
When the Vet told me I might have to put her on this special diet, I googled it. Almost $100 each per month each for the canned and the dry. I wish Royal Canin offered samples. What if the cat won't eat it?
I'm on a limited income so I'm asking for advice. Is there another brand other than Royal Canin that is less expensive? Kitty goes back again to the vet on Wednesday to see if the last shots have helped her but I'm afraid of what I may hear.
She is otherwise healthy. I'm at a loss. She has been checked for everything except the $500 allergy test. Can't afford it.

If another change in diet would help, I'd love to find it, something less expensive.