If you could get a custom HD projector for under €499 ($704) with DVI and HDMI inputs, would you believe them? You might if you knew it was a DIY kit. The kit is supplied by a German company, G&P Optoelectronics, and there’s an assortment of different options depending on what type of resolution you want and what inputs you need.
German handy man Maxi Huber’s system not only has DVI and HDMI inputs but also S-video and VGA. The DIY guide happens to be in German but it is so full of pictures so even those who don’t speak German should be able to make progress with the kit.