which are the legal policies of government in the retail industry?

Answer 1

Unless you're a high profile retailer that's a public corporation you can get away with just about anything short of mugging the customer and stealing their money. When's the last time an independent retailer has gone to jail for price fixing, bait and switch or minimum wage violations?

Republicans wink at trivial things like these.

Answer 2

That's way too broad a question. It depends upon your jurisdiction.