OK deep breathe!!!! You are obviously suffering from the shock of hearing all these costs and that is to be expected however, there are things you can do to lower those costs.
I am in Canada and I don't know where you are located so I cannot speak to the cost of the Glargine in your neck of the woods. I also believe the vet may be quoting you the cost of a 10ml vial of insulin as opposed to the 5 pack of 3ml pen vials which while more expensive initially are actually MUCH MUCH MUCH more cost effective. Either that or you are in the US. You can however order Glargine from Canada for far less money.
The other two things that pop off this page is the glucose curves and the fructosamine test. No matter what the vet tells you, you can do this without incurring all of those costs.
Most of us here home test our cats with a human glucometer and run our own curves to see how kitty is doing. We fill in a ready made spreadsheet available on this site and then send a copy to the vet showing our home test numbers so we can get vet advise abut dosing.
While vets will tell you the fructosamine test is a necessity and kind of the holy grail of making sure kitty is regulated, my recent experience shows that is not the case and I am educating my vet with my experience. I don't think most folks on this board bother with it.
So while there is the the additional cost of testing strips if you home test, this all can be handled much more economically than what the vet is quoting you.
Then there is the food he is recommending. There are several commercial brand foods that will NOT break the bank like the Rx stuff your vet is peddling and is also much healthier for your cat. Believe it or not, some people get their cats totally regulated on commercial food alone.
I am not putting your vet down....you may have an excellent vet but most don't treat that many diabetic cats and just don't know all the tricks people here have to keeping costs down.
I applaud you for taking in Brandy and for thinking this all through so thoroughly. I also applaud you for taking the health of your other pets into consideration. I would not want to be in your position and it's obvious you are really struggling with this but I don't want you to make decisions based on faulty information from your vet either.
I'm sorry I can't write more just now as I have to go out but I am sure someone else will chime in with more info soon.
If you would update your profile to show where you are located, we'll be able to give you a better estimate of the potential costs this adventure entails.
Keep your chin up.....we'll help you figure this out and then you can make a decision knowing you have enough information to be comfortable that you've made the right decision for you and your current crew.
