Looking for IMR 4198

Getting ready to load some .45-70's and while I have plenty 3031 I really would like to use 4198. And the weirdest thing .. it does not seem to be readily available unless you want to pay LOTS of money and order a 1 pound can shipped to you.

If any of you know where I can order some for less than $45 a pound plus shipping plus HazMat I would appreciate it.

I might just use up my stock of Pyrodex R ....