I think it depends on your WF, some carry Country Save and I think Planet, mine does not carry either or any other detergent I'd want for my CD's. I can find Charlie's in bulk at a natural food co op though.
I would pick a detergent you like or want to try and then go to that detergents website to find some local retailers, that's how I've found mine in the past.
My closest WF didn't have Planet or Country Save when I went looking. I need to look at one of the ones further into town, or go to the really nice one in Austin next time I'm there.
I did find Planet at Kroger.
Some of my local cloth diaper stores carry Rocking Green and Charlies, though.
Re: Whole Foods?
Not sure where you live, but I buy Country Save at Sprouts.
Edit: Ditto PP. Different WFs carry different things. I live in Austin, the home of WF, and even the two we have here carry different things.
My closest WF didn't have Planet or Country Save when I went looking. I need to look at one of the ones further into town, or go to the really nice one in Austin next time I'm there.
I did find Planet at Kroger.
Some of my local cloth diaper stores carry Rocking Green and Charlies, though.