Does anyone have any suggestions on where to buy opks within a decent price range? The places I've been they are between $40-$50 for a box of them...kind of on a budget right now so close to holidays but I really want to start using opks since I know that the clomid helped me ovulate this month...but if AF comes I want to be better prepared since I have a hard time using the bbt and cm checks...please help.