Id have filled a corner of the freezer with it. Swordfish is definitely a high mercury fish. The stuff accumulates in your body, and no way to get it out supposedly. Except I use a detox consisting of 20 some odd herbs my mom put together over the years. A short story.... A friend of hers was scoring a 14 on a test that a 15 meant he was fired. He was a welder of some sort and he was reduced to weekly tests, with the company and union ready to drop him for his safety, like 2 or so years before he was to retire if I remember right. Officially chelation therapy is slow and tedious and may or may not work. Well you make the detox with either vinegar or alcolhol and alcohol pulls out more of the useful things from the herbs so its what my mom uses. Her friend didnt even believe a detox was meaningful but my mom can be insistent when she decides something.
Anyway, he takes it and eventually got a 3 on the same test, the detox cleaned the guy out at a deep level, something officially not even possible. Most doctors would tell you it was a fluke, in fact this dudes doctor told him it was.
So in this context, we do try to generally buy the best sourced things we can fish or otherwise, but our bodies have ALWAYS dealt with toxins. Our current society simply has more then most past ones, although probably not all. I mean rome had lead basically everywhere. Im not sure skipping a few specific items that are more contaminated is as useful as regular detoxing. Especially something so tasty and otherwise healthy, that is on sale.
My take anyway, to each his own. Nice score thogey.