Ok - I have to say that the pricing policy is great - only paying for volume printed. It's just that I don't trust the volume calculations. I have uploaded a design stage by stage, and the price (volume) calculations don't make any sense. All prices quoted are in WSF The first part, an empty tube with 1mm thick walls, ID = 35mm, OD = 37mm and height 23mm costs $4.86 which equates to 2.6 cm^3. This is the correct volume. Cylinder model /modules/udesign/utils/openfile.php?id=8122&f=8122_small.jpg Add a ring of warped text to the top of it, thickness = 1mm, height = 7mm. If it weren't text, but a solid cylinder it would have a volume of 0.8 cm^3. Since it is text, it should be a lot less than that. However the price for my original cylinder plus text ring is now $10.17, or a total of 5.4 cm^3, more than double the volume and cost of the plain cylinder alone. Cylinder plus text ring /modules/udesign/utils/openfile.php?id=8112&f=8112_small.jpg Something funky is going on with the text volume calculation. It gets worse. If I add a ring of text around the original cylinder (not on top of it) so that the effect is embossed text raised 0.5mm, that should add much less than 0.4 cm^3 but it adds another 2.8 cm^3 or 2.9 cm^3 (I have two such embossed text rings). So my final model is being priced at $20.91 when the price should be well less than $10. Probably less than $7.00. /modules/udesign/utils/openfile.php?id=8120&f=8120_small.jpg It doesn't really give me much confidence in the pricing for more complex models. Would anyone care to explain what's going on?