Personally, I can taste the difference in coffee when I have a bag that's opened for over a few weeks, but not sure if it matters how recent the roasting was done.

Sorry, yeah, this is more what I meant - as long as the coffee is relatively fresh (my house goes through about a bag a week, so it never gets time to sit and go stale) the price doesn't seem to get you a better/worse cup of coffee.
Of course, my aunt got me an expensive bag of coffee for christmas that apparently makes really good cold brew, so it's sat in the freezer for now waiting for better weather, so I might change my mind in a couple of months. Gonna stick with Lidl own brand beans for now though.