There were just 2 real solutions to this level, but they were much closer in terms of score than could be expected. Had luka used one timer less, he would have won. But this way, another medal goes to Orjan. (Whose name I can't be assed to copy/paste anymore )
Both of these solutions are true works of art and engineering - do yourself a favour and have a look!
[edit]
I just read that luka's solution is rated $700 too high due to the copy&paste bug. So disregard my comments above. It did seem a tad cheap for all the stuff built, especially in comparison to Orjan's...