Check out www.olimex.com for dirt cheap PCBs. They will do panelling free of charge - ie, if your design is 1"x2" then they will fit as many copies of that design into their standard sized boards as possible.

Single sided 160mm x 100mm = $21, so if you can get the design under 25mm x 50mm then you could get 12 for $21, +$8 S&H to the USA.
Double sided at $26 for the same size.

Either way you'd only be looking at under $35 for a production run of 12, with a cost per board of under $3. I'm reasonably certain that you'd move these and not make any loss.