Was able to find Sedge Hammer @ a Lesco dealer a couple of towns away. You're right that this stuff isn't cheap. A .09 packet
was like $16. Made 1 gallon.
I put some down last evening. I also sprayed another area with Weed-B-Gone product to do a comparison test (Weed-B-Gone) is a lot cheaper and easier to find. I used the Turbo Sticker Spray w/both.
So I'll report back w/the results (though it would appear that
the nutsedge season is winding down, cuz my is already turning
yellowish-brown). Perhaps this isn't the ideal time to be trying
to kill it off?