Last week I got this device and pills through my doctor at no direct cost to me.
The device is used twice a day or so to measure blood pressure and then I note the values on a piece of paper for my next doctor visit in January.
The device works good because It also reminds to have thought about stress.
I think it costs 40 euros but would recommend it simply as an aid to be reminded and watch your stress.
I also take two very small pills a day.
My family already wanted to use it too.