I have just bought the Guardian brand ovulation strip at around $36 for 5 strips. About $7+ per strip. I think this is rather reasonable but don't expect immediate result like Clearblue brand. It stated you will have to wait between 1-5 mins for the result and I really waited for about 3mins or so.clearblue kit is not cheap.
any other way to find out ovulation period? :embarrassed: