You must have been lucky. They discontinued the 4x160g last year. Now 3 cans and only 145g all for the same price (at the time, they've since dropped). They cited the price of tuna. Now in fairness the price had gone up, a lot, almost double. But it has since fallen back to just marginally above where it used to be. Will they bring the old size or missing can back? I bet not.
Cor blimey, how times have changed, not long ago (a matter of weeks) I could buy 4 x 160gm tins for £3 from Morrisons et.al. Foodflation metinks gone mad... ;(
I can only post what it says on the ad
I don't believe this is pole and line caught like most others. good price but there is a reason it's cheap