I don't believe they are discontinued, just some of the big box stores are getting rid of them. If you believe the marketing, they are more for contractors than homeowners which are used to not getting a lot of their stuff from big box stores anyway. I had them and think they worked great. I have been donating my set to my father though as I replace them with either the 20 or 60v items so that way I have one less platform to worry about.
The batteries will stay expensive.