We think Rusty may have an URI and plan on taking her to the Vet today. She is sneezing a lot and looks like she doesn't feel good. How much does the treatment normally cost? We have $300 set aside that I was going to use toward a new computer but Rusty is more important. Dusty is fine, not sneezing at all. I cannot afford to pay anything more since I am on disability due to my cancer. Please help!!