Often, mobile home owners will move elsewhere if they find a worthwhile deal. Sometimes, they simply relocate to another trailer within a park, and find it best to sell the old one.
Or perhaps a parent who owned a trailer who passed away, leaving the property directly bequeathed to you where there may not be a way for you to use the property, such as by renting it or living in it thus selling is your only option moving forward. Understanding your needs is my biggest priorities.