Agi-Flow
Ajax powder is sold in almost every supermarket in NYC. See it all the time but never bother with the stuff.
Saw a box of Tide Lemon at a Dollar Store in the Village, but passed as Tide products are notorious for being high sudsing and there wasn't any indications it could be used in front loaders. IIRC the box may have been in French or maybe French and English. This store had quite allot of detergents in French, so I'm guessing much of the stock came from "up North".
Wisk Tablets,
A local discounter had TONS of them, and I never picked up any as it was sold in the supermarkets and had coupons for free boxes to use up. Was totally blind sided when I heard Wisk tabs were being discontinued and made a dash for the discounter, but he was totally sold out.
Purex tabs were at one supermarket in our area, but alas they are now gone too. Asked a clerk would he be restocking, but he said they were discontinued. There is one dollar type store that has some in stock and I'm tempted to nab the few boxes he has left. Silly thing is had one box I got from Target when they discontinued carrying Purex tabs, and gave it away.
Sigh