That is alot more than what I paid, and I got mine at wally-world, for about $15 for 50 strips, but I asked for ketone testing strips. I know there are places that have them even cheaper. Once you get to the place where you want to figure out where your critical carbohydrate level for losing (CCLL) IS, KETOSTIX can be used to help determine where this level is. There is info on this, on Atkins website. Info on lipolysis and ketosis (click here) Here is some more information on establishing your CCLL, and the role of ketostix in doing this. Click here for info
Some ppl don't use ketostix at all, and there are many LC diets who don't use them either. I think that they are a good indicator to show what you are doing is working, but then there are those ppl who don't get any color changes on them, but are still losing weight and inches. Perhaps you will not buy any more of them, I think it is an individual's decision, and that is my 2 cents worth
Ciao for now~