> Yeah. As someone not in any risk group I will prefer the Pfizer or Moderna one. I'll be happy to get the Janssen one or even the Sputnik, but if the vaccine they offer me is AZ then I will refuse.

Maybe they won't let you know, to avoid people refusing to get the AZ "vaccine".

How long until you can buy it? This way it's not a (possibly corrupt) politician deciding which corporation will make the stuff that gets into your body.