You can order your own copies of the 35mm and 70mm Combat Shell miniatures are available through the New Jersey Robots store on Shapeways (shortened URL is http://shpws.me/7Hcn). The designs are provided with or without a "rock" base, but keep in mind the larger base adds to the cost of the miniature.
For both scales, I recommend the White, Strong & Flexible Polished material, the end result is something with good surface detail and the feel of an actual gaming piece or toy soldier. For something a little more substantial, the Stainless Steel option is very nice when used for the 35mm design (I have not ordered a 70mm Stainless Steel one for myself yet).
The 35mm flat base miniature is similar in size and volume to Shapeways' Bowie the Bunny mascot, and you can see how ordering prints in different materials affects pricing in this blog post: What does a 3D printed bunny cost?