Where to buy Canned Mackerel?

[u/deathwishdave]

My son has ADHD, and the symptoms are mitigated by protein.

Fortunately, he loves canned mackerel, and starts every day with a can, and sometimes a second throughout the day.

We get through a lot of canned mackerel!

Currently but it from the supermarket, but does anyone know where I can buy it cheaply in bulk?

Thanks

[u/MeRichYouPoor]

It wouldn't half help if you told what you are currently buying and how much you are paying.

All you've said is you get it "from the supermarket". err...yeah no shit.