I found them yesterday. You're right they aren't 5 bucks anymore. Still, at that price I bought 2.
They don't agree with each other. They are off by 3 with each other. Scarry thing is they are off by 10 from my humidor.
They aren't much of a value, are they?
I had three and two were off by 9 points and one was off 13 points.
Another thing is that the scale of screwedupedness changed depending on the ambient.
When I salt tested they'd be off by x points, then when placed in a 63%RH they'd be off by a totally different scheme of random numbers and there was no sense of reason to them.
I was literally better off picking a number out of a hat.
Here's what I consider the final word on Wally thermometer/hygrometers:
They are useless.
A good calibratible hygrometer is 20 bucks. 25 bucks shipped.
Most guys keep at least 100 bucks worth of sticks on hand at all times.
Many keep thousands worth of sticks.
A $25.00 insurance policy is pretty cheap.
It really doesn't make sense to try to control humidity with a guessing tool. It's painful, damaging and counterproductive.
If you all can't find a decent hygrometer, I have 20 or so calibratible Hygroset II's. 20 bucks shipped. PM me if I can help. :tu