SFGirlbyBay also stocks the posters, and they’re a lot cheaper without paying in pounds! She lists current colors at a special blog: http://keepcalmposters.blogspot.com/
But also always says when she has new ones in her blog. http://sfgirlbybay.blogspot.com/

these are really cool- thanks for sharing! i’ll definitely have to get one- i’m thinking the “Hindsight is twenty twenty”

There’s definitely something about this that strikes a nerve with people. Must be the troubled times we live in….

But shhhhhh….
There’s a bookshop in the UK that stocks the original poster (only in red) for just £3.60. Much, much cheaper and they seem to ship overseas too.
http://barterbooks.co.uk/bb/barter.nsf/buybook?openagent&bookid=7CDAF562D0AAC1F6802570CF005B9B8Ct&orderer=459FF7114A52083A802573710076E3A3

I didn’t find them until after I’d already bought one for $50. D’oh! Oh well.

And if people like the design it’s available as a tea towel (again in the original WW2-era Emergency Red) at this online shop in the UK.

http://www.pedlars.co.uk/page_1390.html

I bought mine here many months ago and it seems to be the cheapest. They’re also extremely friendly folks: http://www.barterbooks.co.uk/bb/barter.nsf/buybook?openagent&bookid=7CDAF562D0AAC1F6802570CF005B9B8Ct&orderer=92FC6BFE1D9DB4D2802573710083D3C6

Although the poster version is cheap, in terms of quality these seem to be far superior. They are hand made screen prints rather than posters!

Lucas and Haley have been wonderful in the production and display of my two new prints with Keep-Calm. A pleasure to work with them.

Matthew Rose / Paris, France