They go through a vetting process. I started the process but my circumstances caused me to hold off. I'll try again a bit later. I think its a great idea. Here is the info about the program for those that don't know:
"Selling Services on Amazon allows top pros like you to offer your services on Amazon Home Services. Millions of people shop on Amazon and many of them are right in your neighborhood. With Selling Services on Amazon, we provide actual orders and easy-to-use tools, so you can focus on what you do best—delighting customers."