There is a little bit of information at[1]:
Average prices per pop depend on object complexity. However, Jones estimates the range to be anywhere between $15 for simple jobs to $500 for complicated prototypes to $1300 for complex jobs for large corporations. Services from the inhouse designer, who charges $75 per hour, are not included in these costs.
...Although obviously that is a huge range. I too would like to see an example workflow.
[1]http://www.forbes.com/sites/rakeshsharma/2013/08/19/ups-may-...
I got some info about this from my local UPS store a few weeks ago. They can print STL or Autocad files, and have a designer on call who can create a CAD file from drawings at a reasonable hourly rate.
They couldn't give me an exact rate for the cost of printing, but said it was typically around $30 per cubic inch. The actual cost depends on how much support material needs to be printed and a small object that requires a lot of support material would cost more than something like a cube.
The printer they were using at my local store was a Stratasys uPrint SE Plus.
