This looks great, thank you. They're still prohibitively expensive for small runs (for 10 boards, above, the cost was $100/board, but for 1000 it fell down to $2/board, and I'm sure protolabs is similar), but at least your comment and the GP takes me from "I wouldn't know how to even begin making this thing" to "Looks like I can just send these guys designs and my box prototype and get assembled PCBs and boxes back", which is almost there, pretty much.
Thanks again!