Western Union = Total Scam Almost 99% of the time...
Having sold several vehicles and a pop-up camper in the past 2 years I can say with a lot of certainty that anyone offering to buy anything you have for sale involving Wester Union is a total scam. Do not waste your time, remove your listing, etc. to deal with the people sending you inquiries of it when they mention Western Union, offer you more than what you are asking for, or ask that you bring it somewhere to be shipped.
I sold a Nissan Maxima about 5 years ago and posted the car on Autotrader and actually got someone that sent me a bogus cashiers check from a fradulent bank in SC and they were wanting me to take it to the closest port to ship it by cargo ship. Yeah like we have a busy port to do that in Colorado!
Anywho, moral of the story is do not trust these people and their evil ways. Most often they are from Nigeria and just want you to fall prey to their tactics in sending wire tansfers.