This Canadian supplier has the best price on 10cm x 10cm x 10 boards that I have seen - about 1/2 the price that I can get the same boards from PCB Cart (China) .. and from China shipping costs are not included (wheras from this Canadian supplier PCBs are free postage to U.K.)..
China has been a "bargain" - But this supplier is cheaper! ... I do wonder though - are they really making the boards in Canada?, or do they simply email your gerbers to their factory in China or some other place where people work at slave wages and expensive "niceties" like health, safety, and the environment are disregarded.
I recon that for 10 boards, factoring P+P in, the cost will be about 1/3 of what I could get from any other supplier (if I only want 10 boards).. Its enough to make me re-draft my boards to 10cm x 10cm. Small runs of PCB's are probably my biggest overhead - Clients want PCB's not breadboard, and even one PCB - and one 10cm x 10cm will cost about $85 + P+P, 10 boards clocks in at about $100 +P+P, so I end up buying 10 anyway, and giving the spares to the client.
I would be interested to see how their price compares for different board size to 10cm x 10cm - but expect its going to be a lot more expensive - Hope im wrong..