As far as TB pricing goes the article above tells you what you need to know. My emphasis added
USB didn't take off world wide until Intel integrated it right into the Mainboard. TB is no different...eventually it'll be right on the Mainboard and the move will be to move away from these backplanes with umpteen USB ports and other stuff. Makes for a cleaner system physically and, with the protocol support of TB, a cleaner one electronically as well.
Just last week, Intel announced that it was working on moving Thunderbolt to the PCI Express 3.0 standard, a move that could see the company double the effective bandwidth for data transfers. The company has not, however, provided a projected timeframe for a public launch of the enhanced Thunderbolt speeds.
USB didn't take off world wide until Intel integrated it right into the Mainboard. TB is no different...eventually it'll be right on the Mainboard and the move will be to move away from these backplanes with umpteen USB ports and other stuff. Makes for a cleaner system physically and, with the protocol support of TB, a cleaner one electronically as well.