Rein in the winter static

Bought the FMX003 on eBay. The cost varies per the vendors, but not more than $250, probably less than $200. Comes from China. Sorry, I did not originally notice that you also asked about price.  There is an FMX004 that costs more, because it reads out to 33kV or some such very high value. The highest charge I have read on an LP that I deliberately charged up by yanking it out of its paper sleeve is about 12kV.  The Zerostat reduced that to about 0.1kV, which is about as low as the sensitivity of the meter when zeroed out.

Zidon FMX003.

I bought my Zerostat in 1972, but last year I bought a static charge meter to determine whether the zerostat still works. It does.

If you don’t want to spend hundreds of dollars on the CS Port or DS Audio gadgets, a Zerostat, used as directed, will remove the static electric charge from an LP surface just prior to playing,for much less money. Do not assume that any kind of de-static tool or technique, no matter how costly, is a permanent cure. You have to de-stat prior to each play, in an environment such as yours. Then you have to de-stat again, when you flip the LP over.