And nigh on IMPOSSIBLE to source in a UK layout. Trust me, I tried.
Same as, they're rare as hens teeth. The anoying thing is my dad was a programmer in the 80's and said that he worked in an office (80-90 people) where everyone used one and they all got thrown away when the office moved .
There's one on the bay at the moment, bidding STARTS at £60 + £10 delivery and there's still 6 days left on it. Not sure if I want to get in a bidding war with some keyboard nerd tbh...Might be worth a little snipe though I guess.
As for the macro/media keys there is a programme called Autohotkey that can bind them to certain key combinations I think, I've never tried it though I just use my n52te .