I was looking for some of these Oxiclean gel sticks as we literally burn through them (1 every 2 weeks) with our kids. They are used to pretreat stains (rub it in, let it sit for 5 minutes up to 5 days) and I haven't found a stain they can't get out.
This is likely a short lived deal. Right now Amazon is selling a 12 pack for $14.78, or $1.23 each plus tax and free shipping with Prime. Normal price at Amazon and Target is $3.39/stick - I''s say ~2/3 off is a pretty good deal. The 12 pack seems like a ridiculous amount, but not that large of a quantity for households with kids. Great deal and sold and shipped by Amazon, so lower probability of quality issues, and they'll stand behind them if they leak in shipping.. 3Camels says this is near the lowest price ever - average price is over $33. If you need it, I'd hurry as they could sell out quick.
I saw a similar deal from a few weeks back that everyone assumed was a price mistake that Amazon fixed quickly. But now I don't think it is a price mistake as Amazon is selling it again for the same price as a few weeks back. Good luck!