Why not go and ask the managers of your local Walmart if they would like to work on your house/flat for nothing? I mean they have been known to ask their staff to work for nothing.
When the day comes that Walmart merchandise is seen as uncool, like the attitude that developed about KMart in the late eighties, Walmart will collapse like KMart did. I think that's what consumers should start doing. I remember when my young nephews started refusing to wear anything that was purchased at KMart.
