Hi all,
In an twist of fate for nearly two years on and off, I've been working on and just finished (well, it's never finished), more soft/beta launched, a very similar tool and service - we don't have any charges as yet - our plan is to hook into printing and other services rather than deal with sourcing bricks; we'd also keep smaller instruction generations free too, it's more custom and detailed outputs we'd perhaps have a fee for. We are quite close to adding some new features such as more control on placement algorithms (eg, disabling jittering, dithering, posterizing levels) as well as a brick matching system. We had started off solely using the commonly available colours (all our demo videos are from this limited set) but for soft launch have expanded this out to include a few more rare but available colours.
The site is up and running including some demo videos at http://photobrix.com - there's more than a few bugs which we're working out but at this point we thought we might as well finally make it 'public'. Much of the code I already have packaged up into a command line tool, here's a screenshot of the help interface, if there was the demand we'd consider looking to spend time developing a standalone piece of offline software - though with our resources (2 people) it's hard to find lots of time.
We're at an early stage but would appreciate any and all feedback.
Cheers,
Jaymz