Escorts offer sex for money. It's a business for them. Your appearance is not important. Being clean, polite, punctual and honest are the most important qualities you can display.
Only you can decide if a porn star is worth the extra money involved. I've been having some pretty amazing sex with very beautiful women for many years for $300 an hour or so. Depending on where you live the going rate may be a bit higher. You should invest in VIP and start reading the reviews of gals in your area. After a while you will get a better understanding of what it's going to cost you to get the kind of service you are looking for.
Take your time and do lots of reading here. Be patient, stay safe.