It's a 9 year old trailer and the owner is selling it to you for $1500 less than he paid for it?? Agree that you check NADA. Buying from a friend can be the good news or the bad news. It may be in immaculate condition...and if you feel $5000 is good for you, then go ahead. But what happens if you pay the $5000 and it turns out to have major water damage or other issues? Good friendships can go down the tubes over things like this. Since you are a newbie, strongly suggest you ask that it have at the very least, a complete roof inspection. Also, how old are the tires? The manufacture date is a 4-digit number along the rim. Something like 3506 would mean that they were manufactured the 35th week of 2006. If they have 4+ years on them, you need to plan on shelling out $500 give or take right away for new tires. Trailer tires may look wonderful, but they're not like car tires. 4 - 5 years and they need replacement. I hope this works out for you. Just be very cautious in dealings like this with friends. And don't forget to check the NADA price.