Thanks. The half unit and memory functions seem useful. Do they hold 300 units like my pens (I'm guessing yes)? I think I used one sometime back. I had to sort of "rewind" it before starting a new cartridge. It didn't do half units though.
They sell Novopen Echos here in the US. I use them for my Novolog and have two of them bought from my local Walgreens. They retail for $70 each without insurance.
Of note: the vials in the 1 time use flexpens are exactly the same. I've taken on apart (Levemir and Novolog) and they fit inside a Novopen Echo.
They retail for the same price and the vials are literally the exact same. The plastic flex pen part is the only difference.
Oddly enough, the vials-only retail for less than the flexpens even though you're paying for literally the exact same thing...actually less considering that you don't get he plastic disposable pen part.