I loved my Maybe Baby. It was really helpful in charting and meant I didn't need OPk's. I was also too lazy/un disciplined to do my temps (there were so many variables that could affect it, I figured it would drive me even more batty than ttc was already!), so this was a great solution. I could also do it as often as I liked without wasting extra money after the initial outlay (could've spent hundreds on OPK's, lol!).
I second Chemist Warehouse as the cheapest place to buy....can it be an early Xmas pressie?!