Yup - had those as my regular jumpers for the last 4 years or so (never used to be called "Collezione" though! )
I love 'em. Warm, comfortable, and you can wear them almost anywhere. I got a similar rollneck one (for dressing as the Man with Milk Tray for a fancy dress party... ) from Debenhams for a bit cheaper but it just wasn't quite as good.
Just been to my local costco and they had merino wool boot socks, packs of 3 didnt have a price on but when i saw this i rang them, the woman seemed a bit dippy but if she gave me the right price £8.80 for 3 pairs. Good price for merino wool boot socks i thought. I may get some try them out. will let you know how i get on if anybodys interested.