Here's a nod to the cheapest PCB prototyping option I've yet seen:

http://dorkbotpdx.org/wiki/pcb_order

One of the members of the Portland (Oregon, USA) Dorkbot group
organizes a panelized PCB order a couple of times a month.  He
panelizes your design for you, sends it off to a board house (the
house varies based on quotes), then depanelizes them and sends
them out.  Turnaround time is about two weeks, from him ordering
to you having boards in hand.

Price is $5US per square inch of board size.  For that price, you get
three copies (i.e., a board 1 inch (25mm) to a side costs $5, and
you get three of them).  Shipping inside the US is included, and he
does a flat rate to foreign addresses.

He's looking for more contributors, and he's got a panel going out
in a couple of days which is underfilled.

Mike H.
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