If you want to retain Arduino sketch compatibility for one reason or another (many identical builds but not at commercial scale? Who am I to question?) you can

If you want to retain Arduino sketch compatibility for one reason or another (many identical builds but not at commercial scale? Who am I to question?) you can build Arduino clones from components and perfboard for under $10. Edit: Nix that, just buy the Ardweeny: http://www.makershed.com/ProductDetails.asp?ProductCode=MKSB012 http://www.makershed.com/ProductDetails.asp?ProductCode=MKSB...