Perhaps, this is the company you are referring to: Ballast King, owner Bill Swarthout. I bought ballast from him many years ago and as recently as July, 2015 when I was building my larger layout here in CA.
Attached is a pdf of the price list I ordered from in 2015.
Anyone interested should call Bill at: 440-937-6771 to discuss this further.
This is a great product as my layout is in my "great room" on hard wood floors. If some ballast gets on the floor, it doesn't scratch.