I see that there are HDMI and DVI-D dummy adapter editions, but they're a lot more expensive. I wonder if you could just get a cheap mass-produced HDMI-->VGA or DVI-VGA adapter and then push in resistors to save a few bucks.
With DVI-I, the resistor trick should work (it's just VGA), but not as easy as just folding some 1cent resistors around.
