The other day, Sony said it would rely on motion control, 3D gaming, and the PlayStation Network to drive sales in 2010. To me, 3D gaming is a pipe dream, at least for the next five years or so, and today I’ve got a little proof.

XpanD, the company that produced the glasses for Avatar has said a pair of their shutter glasses will start at $70 a pair and run up to $150. That’s on top of the premiums you’ll pay for the TV, though some sets will likely ship with glasses included.

For a family of four, you’re looking at about $300 just for the glasses. Granted, your average family of four won’t be gaming in 3D together, but think about having your friends over. The expense of the hardware is going to dictate that you enjoy your 3D games alone, a trend the industry has been moving away from for the last decade.

Until costs come down, there’s no way Sony can expect real revenue from 3D next year. It’s just too expensive.