I confirmed Chlor Out IS a current product, but considered 'specialty', per CSR, mainly for people who make mistake of over-chlorinating.
I wasn't impressed with the price, but picking up locally beats shipping a heavy tub from out of state and probably makes the local price more realistic.
MSDS for Haviland Chlor Out
http://www.poolspachemicals.com/files/ChlorOut.pdf
Got a deal. 25# $39 local pickup. $63 + shipping online (huh?) Hope I don't get burned by impurities as warned by PE.
Now I have no excuses not to start homebrewing.