I found this handy website today by doing a google search of funeral laws. The Federal Trade Commission had put together a primer on all the things consumers need to be aware of as they go into the process of paying for a funeral. It's a daunting—and expensive—process ... and many people are not prepared for it at all.
The page outlines basic laws and different types of funerals. Near the end, there is a handy check-sheet of prices to inquire about. The site also includes a helpful glossary. It's a great place to start if you're hoping to become more educated on issues like these. It definitely would have come in handy when my grandfather passed away. I think the funeral home we worked with was completely reputable and very pleasant, but we had nothing to judge that on but their behavior to us and our own instinct. It would have been reassuring to have some sort of guide to work from at the time.