Even in Kodak's home country there appears to be some availability questions. Recently I noticed my Kodak brown toner was getting low and discovered that neither B&H nor Freestyle listed it. Calumet listed it -- at one gallon for a mere $300+ dollars! I haven't tried it yet, but I bought a small bottle of "Legacy" branded stuff from Freestyle which is claimed to be the Kodak formula.
I'm suspecting they may be reducing the variety of package sizes, as with some film being unavailable as individual rolls. Worst comes to worst, it would be easier to make our toner than film!