KBB says sugg retail $21,310 with trade in at about $18k. On NADA a 2005 SE 4cyl Accord w/ 8k says it retails at $20,300, trade in $17,725.00. I'm not sure what to go by. They are asking $17500 for the one I'm looking at and will 'certify' to get the 7yr warranty plus the interest rate drops 3 points on certified they said. So the only real difference between an LX and LX SE is EX wheels, spoiler and painted side skirts?