Hello,
I think you have to design and build your own PCB which is much cheaper than the demo boards, the following link has a description about anything related to PCB.
www.thinktink.com/pcbfram.htmThe following links can provide you prototypes or even large batches:
www.batchpcb.comwww.pwb-xchange.com/pcb_shop.phphttp://www.pcbpro.comhttp://www.pcbexpress.comwww.express-circuits.co.ukwww.pcb.co.uk