sell or trade?

Here's a strange one...I actually received $1,000 more on my trade-in of my old coach then I was planning on asking for the coach trying to sell it myself. I'd never mentioned to the dealer that that I was going to try to sell the coach on my own, nor what price I would be asking for it, nor did we previously discuss what I might be looking to get for it on trade. Go figure?!

(BTW: The price for my old coach that I was planning on asking was mid to high NADA book at that time.)