Some of the IMAX titles are on Amazon for under $19.99. As far as the rest, I am guessing once more titles are released... for now though, even eBay is expensive!
I have to admit to a little sticker shock at the cost of 3D Movies. This listing at Amazon shows that the retail for these movies is going to be about $27.99. I guess that's what I get for buying one of these TVs early. How long will it be before we see a reduction to $19.99? That's still expensive but seems more reasonable.
$27.99 to $34.99 is the MSRP of most Blu-Ray discs these days, which usually means a retail of $20 to $25. Perhaps the MSRP of these 3D discs is higher.
Still, if you think $28 is bad, don't look at Step Up 3D, which is a $50 box set. Yipes!