I traded my '02 XE with 45K miles in this weekend and got $13,500 for it. Plus they have a $1,500 rebate on Sentras, so I only had to roll about $2,000 into the new vehicle. (See my post under Dealerships for my incredibly awesome experience!!)

By the way, payment ended up being $100 less per month, plus $100 per month gas savings (according to my calculations based on my personal driving habits), and about $50 savings on insurance. That extra $250 per month is definitely worth it to me!