Hi, I have mentioned before that I bought a BP monitor from Lidl, mine is a wrist one, what I find so good is the monitor tells me if I am in AF or imagining it!! (as if).
I can recommend Lidl's BP monitor and also the price, mine was only £9.99 but I bought it 3 or so years ago.
So today you need to find your local Lidl and go shopping as when they are gone that's it till next time.