Good Morning, Revdocjim,
As others have indicated above, there are plenty of options available. Should the price of T-Max in Japan be exorbitant, something else may make a lot of sense. I use T-Max for T-Max films and have done so since it became available. Yes, it is more expensive that some other developers, but it produces excellent results, and the concentrate has a very long life. Long ago, I settled on a 1:7 dilution for both TMX and TMY; that works very well and saves a little money.