Most of the people here are in the UK, where prostitution is legal. As you are talking about $100, I am guessing that you are in the US, where it isn't. (And if you go to where the client is, they are paying for the venue, no matter where you are.)
You need to think about where and how to advertise - including never saying anything that a court could interpret as 'I will have sex with you if you pay me' - plus having a screening procedure, so that you can be reasonably sure that the person you are seeing isn't going to arrest you. This latter, except aimed at other threats is what's being called 'security procedures'.
Do look at the main www.saafe.info site and do a search for 'America' and 'screening' here.