This is something I’ve thought about as well – what’s a fair way of pricing printed objects? I figure the potential costs associated with a build can be split into those build dependent costs and those costs which are uniform to every build.

Build dependent costs: (1) plastic (2) electricity (3) waste
Uniform costs: (1) set-up time (2) operator time

I’m not sure how to take into account the cost of the machine.  You could incorporate it by including a cost for “machine time.”  Then again, you could just tack on a set pro-rated cost of the machine to each build.  Obviously, there’s a small amount of set-up – converting to gcode, then to the s3g code, moving the stages into position.

1. The Lost Blog Posts
2. Plastruder! [Draft 12/25/2009]
3. UNTITLED [Draft 12/25/2009]
4. Preparing to print [Draft 12/27/2009]
5. More prints [Draft 01/04/2010]
6. Prototype Pricing [Draft 01/19/2010]
7. MakerBot tuning [Draft 01/20/2010]
8. Plastic Screw Anchor [Draft 02/02/2010]
9. Magic [Draft 02/03/2010]
10. How are you printing with PLA? [Draft 02/16/2010]
11. Rebuilding my extruder [Draft 02/16/2010]
12. MY robot [Draft 02/18/2010]
13. more things i learned [Draft 02/20/2010]
14. First commissioned piece! [Draft 02/22/2010]
15. MakerBot: Toy or Tool? [02/25/2010]
16. Idea for Skeinforge settings… [Draft 03/27/2010]
17. RepRap and MakerBot alternatives [Draft 04/05/2010]
18. RepRap Parts for Sale [Draft 04/07/2010]