If you have a HDMI 1.3 and BD-Live (Profile 2.0) compatible Blu-Ray Disc player, there is downloadable software to update rather than having to buy a new Blu-Ray player. However, the image is not as sharp as the new HDMI 1.4.
Many people are annoyed that 3D movie glasses are required for viewing in 3D. The lack of channels as well as the small selection of movies and events available in 3D is another a drawback. Furthermore the cost of filming and producing 3d is very high. On top of that, many people have recently bought new HD TVs and Blu Ray players and are unwilling to spend so much money to replace these new items.
Estimated prices for 3D TV aren't remarkably higher than normal HDTV (usually $200-$300 more). Costs are approximately $1,000 for a 42-inch 3D TV while the average 42-inch HD LCD costs around $650.
You can buy 3D TV now. Mitsubishi, Samsung, Panasonic, and LG all offer models.
3D ready implies that the TV can receive or produce uncompressed video signals that transmit 3D. That is what you want in a 3D TV, obviously.