Gee, a lot depends on your coverage and what type you are having (OR setting with sedation or just unsedated scope in office setting). Plus, every facility sets its own price. Providers often will give you a "no insurance" discount. I think your first step is to decide who is doing it, where it will be done, and under what setting. Then you call and get an estimate. It could be anything from $30 (my copay) to many $1000s.
Jan