This is one of the greatest things about the internet: the reduction of information asymmetry.
Occupations like investment advice and sometimes auto repair exploit the heck out of information asymmetry.
The death business is especially nefarious because not only are they exploiting information asymmetry, they also exploit emotional overload.
When I was in college, my dad died in another country. The mortician had me over a barrel. The hospital had one funeral home they worked with and before I knew it, the funeral home was in possession of my dad's body. Want to transfer it to another funeral home? Well there's a charge for that. My only option was to pay them whatever they asked to cremate him. I paid some outrageous amount (I believe it was about $600, which was a fortune in the small 3rd world country he was in) for cremation and a little urn and box to carry him in.
Even as a guy who was emotionally relatively stable (I was mostly estranged from my father), it was still an infuriatingly weak position to be in as a "customer" of one of these predatory businesses.