Lee made a run many years ago, and only of sizing dies. What they have are sizing dies with no decapping assembly. I believe they made them for Bill Cunningham, but he didn't take them all. Lee is just trying to get rid of the inventory and they have no plans to make more.
I bought a 40 S&W die set from Bill Cunningham back in 2005. It came with a Lee sizing die, that I'm still using, but the rest of the set was Star. The 40 S&W taper crimp die that I have for sale in the WTB/WTS area is from that set. I replaced it with a Case Kicker friendly die from Dave Wilson.
I haven't had any problems with the Lee die, but Dave's are nicer.