If the eye by itself is $30-40 (depending on store) and the Wiimote alone is $40 (considering its so similar to Move) then I could see a combo price of $70 for eye Move and the wii-sports knock off games as a starter edition. Then like $50 for Move w/ same game pack or $40 stand alone. Then the sub controller would be $20.
That would then need to coincide with a PS3 price drop of $50 to allow bundles for current pricing or slightly less.
However, without a completely different/unique game like when Wii Sports or Wii Fit launched, its still going to essentially fail overall.