I agree that the game is very unique, with the best description being the anti-Barker's Markers. However, there are a couple of suggestions I would like to make.
I see this as a turntable game, with the Blackout boards laid out in front of the prices similar to Bonkers and not side-by-side. It makes that weird area next to it when you take them away.
I'm not sure if I like three options for the SP's, but I would most certainly change the third option to "exact" and not "true", because "true" implies the other choice is "false".
The reveal should be thought about again, because I'm not quite sure how somebody would know that the mirror corresponds to red and the trip corresponds to blue. I would say that the host should ask "light up the price of ....", and have that be able to shine through the board should it have been covered up. In this way, the boards are more like black plastic rather than true blackboard material.
Giving away one of the prizes for being uncovered seems too easy. I would say both are uncovered and you win, or you covered up one or two and you lose.
Vader is right with the timing issue, though. One idea is to have only 2 SP's, with each correct answer reducing the number of boards by two.
In all honesty, I would do away with the SP's all together. 8 prices, 4 boards, go.
At the beginning, you have to cover six of the eight prices with the black boards, since you start with 6 black tiles.
I don't know if you meant it this way, but having contestants cover prices and then "reveal" some based on how well they do on the SP portion is a bad idea since you wouldn't be able to see what's underneath.