I got it on Amazon
https://www.amazon.com/dp/B0CD1T1PJL?It was a bit less than $10 when I bought it but it is still pretty cheap.
Skooter, yes...humidity in Dallas is almost never low. Due to the massive concrete heat island effect we get only occasional freezes and due to the lakes that ring the city it is as humid as it can be all the time. This morning it is 90% already. We'll see.