Well, when it comes to eggs, you can tell whether they are truly free-range. I always buy the happy-chicken eggs; some are grain-fed, some are free-range.
You can tell by the yolk. A truly free-range chicken who eats bugs will lay an egg with an incredibly bright, nearly orange yolk. A grain-fed chicken is paler.
In fact, back in the day when eggs were regularly used as a binder in painting, when painting flesh tones of a man, painters would use a "country egg," for the ruddier tones it would give, and a "city egg" for paler, more delicate female skin tones.
There are eggs sold that claim a higher level of good fats. I've gotten those from time to time, but I don't look for them or anything. What we actually care about is, most of the happy-chicken eggs are grade A. There is one local brand that is grade AA, and that's what we get (cage free, not organic). Egg grades are totally based on freshness, and I have no clue why most of them are grade A).
Wyvrn, Fred Meyer carries some Coastal Organics chicken, but they don't always have it. And Top Foods carries a local farm's chicken. They sell a nice big tub of wing drummettes for makin' those hot wings.
Yeah, I go to CostCo and stock up on meat and chicken, and got some really nice Copper River sockeye salmon last time.
The light/dark meat thing puzzles me...as a kid I loved dark meat, but currently I prefer white meat, although I'll eat dark meat. I keep hoping I'll get more of a taste for dark meat again. And, of course, I love the skin. I don't care if it's yellow or not.