Those 3rd party tablets will have to sell at least $100 less in order to get some market share.
Motorala $799 tablet is a joke. It has to cut half price in order to compete.
HP webOS and RIMM has no chance to success at all. Let's see if Microsoft can come up nice windows7 based one. Microsoft has a lot of apps to leverage. However it has to work harder and smarter to compete with iPads and Anroid devices.