Sliding keyboard/phone case modification

I made a small case for my phone to attach a bluetooth keyboard to, but when I looked at the price, it was 95 dollars. I was wonering if anyone could modify iy to lower it's cost.
-Image from Shapeways

What was the software you used to create the model.
Depending on that and the size, you could make it hollow. Or cut away parts of it by holes or a pattern.
Need more info, or PM me the file.

I used Tinkecad to create it.

Sorry I can't use Tinkercad. I don't have WebGL

I've sent you a PM regarding this, please PM me back at your earliest convenience.