I have also used OSH park with great success. Depending upon the size and options you want, the basic boards from ITead Studio are stunning value for a 5×5 cm ($10 for 10 copies IIRC). I do remember that 10 boards delivered to the UK was less than £10 and they have been faultless so far in several orders. You do need to be prepared to wait for them thou’ as they are shipped from China and the courier charge wipes out any cost benefit.
You don’t get the gold or the purple solder mask of OSH park but they are so cheap for the effort saved that I have virtually given up using perfboard.
