best state to buy/sell used RV

I am a tourist planning to travel to Alaska this summer for 5 monthes. I want to do it one way, I don't mind direction, as I want to sail the other way. Renting very expensive, so I need best of your advice of where to buy and sale an economical type B /C RV (or 5th wheel combo)in the most efficient way.If you know if there is a bulletin brd for similar travellers that want to move the other way - please let me know.
best state to buy/sell used RV

I am selling my 2002 Class C Jayco Greyhawk 31 foot with 30,000 that I was on the road for a year with. We need to sell due to finances. All warranties are transferrable. It has never been wrecked and plenty of basement storage and very roomy bathroom. We have 5 in our family, all boys over 6 ft and slept very comfortable. If interested email me at for pictures. Asking upper 40's new was mid 60's. It is in excellent shape. Fully loaded!