Here is another parts post for a 12V @2A switching power supply. This unit is small and has an aluminum case with cutouts for mounting. I used this power supply in my Reflow Controller project.  You can find it on ebay here (link will expire) or search for a DC 12V 2A Switching Power Supply Regulated.  You will more than likely get multiple results.

Most of my projects require some type of power source. Now, I could go the DIY route and build my own power supply or I can do a search on ebay and find what I am looking for already finished and ready to go. Here we have a Minghuada MHD-10VA switching power supply that accepts 110-220VAC and outputs 5V @2A. This unit is small and has an aluminum case with cutouts for mounting. You can find it on ebay here  (link will expire) or search for a DC 5V 2A Switching Power Supply Regulated.  You will more than likely get multiple results.