If you want to make profit from selling stuff on Shapeways, you have to set the end price for each model and each material/variant. This is very tedious, so I wrote some JavaScript that makes the pricing table more usable.
To run it, paste the contents of this file into the JavaScript console of your browser on the Shapeways product editor page. Or install the script in Greasmonkey. The script will apply the following enhancements to the page:
markupfield becomes editable, so you can directly specify how many dollars you want to earn on each sale. Changes are applied to the rest of the row when the focus leaves the
markupfield.
markupfield, there is now an input where you can enter the size of the markup in percent of the base price. Changes are applied when you leave the field.