Apart from others already seeing this same, or almost identical text, consider the punctuation, capitalization, and grammar, these are all very poor in this post. That in itself is questionable.
Then asking for your PayPal account information ... um ..... NO! Run!
Be patient and leave the item "out there". Eventually someone will be "real" and inquire from you.
Besides? If this person is 'at sea' and can only get internet access for a specific limited amount of time, then how in the world is he going to pick up the RV? Hum? No, the whole thing IS a scam. I wouldn't even respond to the e-mail with a "no thank-you." Just let it go!