I know Bee wrote about the monitor and I'm really interested in purchasing a used one (because I can't justify forking over the $$$ for a new one + sticks).

I'm not confident that the husband and I are BD-ing on the right days because I have long cycles (33-35 days) so my O days could be all over the place. Anyways, aside from Craigslist and eBay, are there any other places I should be looking? Hint to Mr. Bee - time to set up a classified section?