https://www.amazon.com/dp/B01GTYIEG2?m=A1TSN35NIS24VZ there you go. I must say I am very surprised that they are so readily available in the UK but not the US, not to mention being cheaper in the UK as well.
There's still some available on the amazon.com link I sent you, but they are fairly overpriced.
You should wait for "non reference" models as well, as you'll get much more performace/cooling/overclocking capacity, etc
I would. Well, I'm not because I can get one for cheap in the UK, but if I lived in the US I would.