I ddin't know the ones on CBid were that cheap. That's why I was going this route...to save some $$. I was thinking about doing it for this year's trip to Disney, since we'll be gone about 5 days. (Ergo the wanting to save) I'll only need 3 or so, seeing as how I'll be near Fuego one of those days, and I'll have my pipe. I might experiment with a gasket of some sort to stop the leaking....or just look on C-Bid and get one of those.
I found that hygrometer on amazon. Here:
Ambient Weather Hygrometer