No matter what, the actual cost will depend on the art printed, the size and makup of that art and the settings that the individual use chooses. Every one is looking for a set cost, but the real reality is that you cannot know this untill the art is RIPed. If you look back through the posts, you will see all kinds of claims and averages, but your mileage will vary, and will in fact be a lot more when you first start outI was told by Anajet that for the mPower, it is about $0.50 when not printing white ink and $1.50 (includes cost of pre-treatment) when printing white ink. I have also been told the next version of the RIP software for the mPower will include ink cost.
I should be receiving my mP5 in two to three weeks.