If you're willing to window shop until you find a match and they offer a good discount coupon code, the Dell business outlet gets you current generation (and one generation old) refurbs with same warranty as new:
http://www.dell.com/us/dfb/p/
These are not units that were used for a three year lease, but rather new units that were returned because the customer decided they did not want it, or it wasn't configured how they now want it, or they set it up and found something amiss.
But even with a coupon, you'll still be hard pressed to find a $250 current generation Latitude. For that price you might have to settle for the off-lease units at the other Dell Refurbished store where 40-50% off coupons are common. These come with a 100 day warranty:
http://dellrefurbished.com/laptops
http://www.dell.com/us/dfb/p/
These are not units that were used for a three year lease, but rather new units that were returned because the customer decided they did not want it, or it wasn't configured how they now want it, or they set it up and found something amiss.
But even with a coupon, you'll still be hard pressed to find a $250 current generation Latitude. For that price you might have to settle for the off-lease units at the other Dell Refurbished store where 40-50% off coupons are common. These come with a 100 day warranty:
http://dellrefurbished.com/laptops