bladekey@frankmguard_techinfo
Shapeways calculates its price based on the size / volume of the object. If you have access to a 3D printer you can print it yourself (personal commercial use). See http://www.thingiverse.com/thing:688659
If you want a less custom case, check out Jameco #18869 or 2210685 and also a Wisher WCA H2505 are also suggested by Electronics Trivia by Steve Wagner. See https://www.youtube.com/watch?v=lW99w1ynUVM