I have had very bad run with accurites I'd trust the little stick on ones more based on what I have seen. They are so easily tested there is no reason not to know. The cost of a calibratable analogue one is very low.

http://www.amazon.com/Cheaphumidors-...8348674&sr=8-6

I don't know what the shipping is but...

FYI http://cigars.about.com/od/humidors/qt/hygrometers.htm