That price is for a pair of 3.5meter cables (10-foot), whereas the cables from Parts Express are 3 feet. Since Outlaw appears to be out of the shorter lengths, you might consider
Blue Jeans Cables - it's a few bucks more than the microphone cables, but I trust Blue Jeans to make a good cable for home theater use, whereas I don't know as much about Dayton's mic cables.