Where to buy a FEZCLR

I’d really like to get hold of one and start making with it, but it’s pratically nowhere to be found.
Any hint?

You mean FEZ. It is not available yet but there are the older FEZ board that you can use today, like FEZ Panda and FEZ lemur. Check at mouser.com

Any idea when FEZ will be available?

In a few weeks