carpediem,
LBT is just in the process of getting back in business after a long stay at the graybar hotel due to some Federal tax anomalies. It'll probably be a while before they're geared back up again.
I've heard of a couple of other companies that make these for Brinnell, but can't find them in my bookmarked sites.
Saeco makes a great one, and I use it myself. It is in SAECO instead of brinnell, but comes with a sheet that translates the hardness from SAECO to brinnell for you.
Costs around $95 at a number of places including Cabelas.
Ka6otm