Those do not look like deals to me. I can get 32 ounce bottles for slightly more.
They’re cheaper per ounce than both Supertech Lawnmower as well as Supertech HD30
...and one is a 48oz bottle.
Supertech HD30 is 2.79 for 32 oz., that is regular price and I find better deals than that, is still cheaper than the 20 oz SAE 30 which you got. I am not even concerned with so called "lawn mower" oil which I never get suckered into. I would bet the STech has higher API rating than Super S 4 stroke oil as well..It's nothing to get excited over.
The point is that its on sale, that's what this sub forum is for, posting things we find that are on sale/rebate/promo, this isnt the sub forum of "that's great, but X brand is better"
API ratings are moot in most air cooled domestic engines. Shoot Briggs oil is SJ as well, and its 3x the price at lowes.
Anyway, feel free to post the deals you find on SAE/HD 30 weight oil, this is just one option I came across and figured I'd share.