My local emporium, Recobs, has 2400 at $20.79 for 1 pound bottles.
Browsing ALLIANT
I got a couple of those from them a couple years back.
Definitely not discontinued thankfully!
I use 24 grains of 2400 under a 240 jacketed bullet as 44 magnum equivalent in 444 Marlin brass.
19 grains under a 260 WFNGC in the 44 magnum.
I would use 2400 any day instead of W296 having given up on ball powder unless necessary.