Mutli-touch Setup Parts List:
43in X 24in Enlighten Acrylic Sheet $140.00 (I had to buy a whole sheet for about $540, you may not be able to get a single piece from them)
43in X 24in Acrylite 7D512 Rear Projection Sheet $450 (This had to be shipped from the States, there is no supplier of this particular RP material in Canada, we bought 3 for about $1370 shipped)
1 x 5M Led strip + 2 Modified Ps3 Cameras + 1 power supply for LED strip + 2 x Sets of Lenses for modified PS3 camera $635 from Peau Productions (plus there were customs fees from shipping it over the border)
1 x BenQ MP522 ST Multimedia Projector $732 from Grey Tech(taxes & shipping incld)
2 x 8ft X 5/8in U-Channel $20 (from Home Depot)
Total Cost: $1977.00 (There may be some minor variance on costs and this doesn't include the housing that you will build the table into, but its pretty close given the suppliers)