Selling on Facebook Marketplace

Over the past few years I have bought and sold numerous things on facebook marketplace, and there have been many good experiences with people who were courteous and nice to be around as well as bad experiences with people who were inconsiderate and rude.  Unfortunately there are a lot of people out there who like to trick other people into overpaying or selling them junk but that is why it is very important to establish a relationship with people you are buying from or selling to.  Most of the items I have bought and sold on marketplace were big ticket items that cost anywhere from 1000 dollars to 6000 dollars and everything was used.  When buying a used item off of somebody it is important to not only look over the item you are buying but to also see whether or not you can trust the person selling it.  If you do not think that a person is trustworthy, they could be lying to you and hiding major problems with the item has.  I have experienced this many times, one time I even had a guy selling a dirtbike I went to look at say it was in good condition when the engine was about to blow up.  Some people have no problem lying to another person especially when they think that they will never sell to the person they lied to again and even though that may be true, it is still dishonest to intentionally sell someone something that is bad.