Basic Blood Pressure Monitor on special offer at the moment (was £19.99).
Price for instore purchase. Online add delivery.
I think Lild/Aldi have a smilar item every now and then. Looks like a good price for what's currently available.
* Keep a check on your blood pressure quickly and easily
* Measures systolic, diastolic and heart pulse in the comfort of your own home or when travelling
* Easy to read LCD screen with simple, automatic operation
* Stores your last result in the memory
* Battery powered (2 x AAA sold separately)