I'm on metformin, which I have to stop taking for surgery, and my doc wants me to get a blood glucose monitor. I don't want to spend too much since I'm not going to need it long. Anyone have recommendations for a decent inexpensive model?

Walmart has one that is fairly cheap called ReliOn. I think they have a couple of different versions, mine is called Prime. I used it lot during my "prediabetic" stage but only occasionally now. I'll always check my glucose at home before I get labs done just to see how it compares and it is pretty close. The refill strips are pretty cheap. Used to be $5 for 25 but I haven't bought any in a while so they may be more now. Sometimes they lock up the strips and you have to ask for them because they are a high theft item.