bleach - 6% sodium hypochlorite

https://www.familydollar.com/homeline-concentrated-bleach-121oz/FD1417037 It has 6.5% sodium hypochlorite Right now the product is out of stock, but I was wondering if it ever goes back to stock would it be wise to use that? Home Depot has 128 oz for $8.50 giving me 0.0664 cents per ounce...

I opened the pool yesterday and put in 10 gallons of bleach 6% Sodium Hypochlorite, but when testing the water sample the next day, it does not show any FC, sample did not turn pink after I added 2 dippers of R-0870. i then took a cup of water half mixed with the same bleach and it also did not...