Selling on Consignment?

I have had several dealings with PPL,we bought our first Class a thru them,they handled everything for us(kinda like a car dealer)When we started looking to upgrade last year, we found a unit at PPL that would work,original thought was to trade in our first unit on the upgraded one.They made a ridiculos offer on our old unit which was half of what we still owed on it.We decided to make the deal on the upgrade anyway,and sell the old unit outright(on Craigslist or something like that)After we closed on the new unit,they asked what we we going to do with the old unit,which we told them our plans.They said why don't we put it on their consignment lot.The value of the old unit changed tremendously when that happened.Their commission was 10% on the selling price.You give the power of attorney on the vehicle to them,which gives them negotiating rights,after you set the absolute low price you will take.In the end they sold our old unit in 10 days and handled everything,I would deal with them again.jg