Butcher's Tripe Mix

Butcher's Tripe Mix RRP

RRP 1.2kg cans = £0.75?
Can anyone point me in the direction  (online) where I can buy at that price?
Or the lowest price any one has found.
I have 5 Dog and some time look after 3 more.
They go through can like there is no tomorrow

Thank all
Bellkio