I think the problem may have been that X10 often almost gave their products away. In the past there were times when their appliance and dimmer modules were sold for less than it costs me for just an empty case. Other companies offering similar devices - Leviton, SmartHome, and ACT - priced theirs significantly higher. I know things are cheap to make in China, but you have to make enough on each sale to maintain a viable business.
It appears that their manufacturing facility no longer exists, and they are just selling left over inventory and products produced by other companies.
Jeff