We bought our MH four years ago in a private sale, after it was advertised in our local paper. The owners (the original purchasers) had run into medical issues after 8 years with the RV and offered it at what they still owed on their home equity loan. It was about $5k under Blue Book.
We had three enjoyable seasons with it, but the '14 season turned into a "no use" situation, due to other things, like our 50th wedding anniversary and some issues with family. We decided having it sit on the driveway depreciating by the month wasn't a good idea.
Not wanting to deal with "looky-loos", we decided to consign it with a local dealer, who had a good reputation. What a disaster. We finally got out with just a bit less than wholesale blue-book and $4000 more than we thought we'd get after the "only bid", but the dealer was really shady. No names, no pack drill - we sorted out the differences and I've agreed not to post any more disparaging remarks.
Be VERY cautious with a consignment. The dealer holds all the cards and can really screw you if circumstances permit. If you decide to go that route, get a copy of your state's rules regarding consignment sales and study carefully, preferably with a lawyer looking over your shoulder and make sure the dealer follows the rules.
If you don't want the hassle of dealing with private buyers, then IMO, it's better to sell directly to the dealer and avoid the grief. You'll get less, but it saves a lot of hassle.