I don't know if there are Federal laws governing this and there should be if there aren't any, and am pretty sure State laws vary greatly, ranging from ultra slack to ultra rigid, so some questions please based on the present situation.
Based on what I was able to find, all the fed laws are related to the processing side of meat handling, not retail. Retail laws are apparently state by state.
1. Would you go back to a market you found were relabeling
Yesterday, try to find the exact law, I called the meat manager at this new store's main competitor yesterday. He said that in Washington, it's not illegal to rewrap meat
as long as you relabel it with the same packing and pull dates. He readily admitted, or you might even say insisted that I know, that it's in fact neccessary to rewrap most roasts daily, to get rid of juices that accumulate in the bottom of the package. At his store, however, they always maintain the original packing and pull dates. Asked about the average shelf time, he said roasts are given five days to sell. On the fourth day, at his store, they'll apply a $1-3 off coupon to the package at that point to ensure it sells. They rarely rewrap smaller cuts and never rewrap chicken. He suggesed I call the Health Department to report what happened at the other store--he also said he's hired meat cutters who have worked for that chain who have admitted to him that re-dating meat frequently occurs there.
2. Do you shop at any market you completely trust not to engage in this kind of deception
I'll never buy chicken at this store again. I might buy other meats, whose freshness is more evident, because due to their being so close and all other markets so far, it will be hard to not be their customer. However, as before they opened, I'll continue to buy as often as possible at the places I know I can trust instead.
3. Have you found any differences in this practice between a higher priced or gourmet market and lower cost or 'value' markets
How one answers that question will depend on where each of us who answers lives and shops. But in general, the "follow the money" rule works. I think it's very true here in Bellingham. The parent company of this new store that just opened, which is supposed to be an "upscale" venue along the lines of a Bristol Farms (without them having a clue of how good a Bristol Farms is or believing the good people of this town would know the difference), also own the lowest end and dirtiest stores in town. It's certainly naked-eye apparent that they don't have the across-the-board organizational attitude towards minimal acceptable quality of their main competitor, Haggens, and that applies to not just variety and freshness of meat, cheese and produce but infrastructure stuff like type of/condition of refer units and ventilation of instore cooking areas.