Sourcing kitty litter

This stuff is expensive if you get stuff which isn’t clay (I presume it’s better). I changed to cheaper stuff one time and my cats rewarded my thriftiness by peeing in a few places which we hadn’t mutually agreed upon.

https://www.petvalu.ca/product/worlds-best-multiple-cat-unscented-cat-litter/FCM00044CA

Open

This crap is expensive! It’s like twice the price on Amazon:

https://www.amazon.ca/Worlds-Best-Cat-Litter-Multicat/dp/B009ZUGJII/ref=sr_1_7?keywords=worlds%2Bbest%2Bcat%2Blitter&qid=1642461535&sprefix=worlds%2B%2Caps%2C85&sr=8-7&th=1

Why is this? Getting it delivered makes huge sense to me since it’s laborious going to the store and buying it at the rates that Yellowfin and Puff poop.