I like salmon, but neither DD nor DH do, so I don't buy it. (I wait to visit my mother who makes it for me. Or I buy it canned & mix it up like tuna salad.)
When we have fish, we usually get mahi mahi (frozen) and make it into Baja-inspired tacos. I've found that Trader Joe's seems to have comparable pricing to Wegmans, but because I can get a smaller package (i.e. - only what I need) at TJ's, I buy it there.
We also do TJs fish fingers, which are either cod or halibut, I don't remember which.
Other mild-tasting fish you might want to look into are flounder, cod, and halibut. Of those, I think you'll likely find the best pricing on cod and flounder. (I'm not fond of flounder myself, so I haven't looked in ages.)
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Liz
DD (3/2010)
"Make mistakes! Get messy!" - Miss Frizzle