They also allow you to do a review prior to the turn in so you know what you are going to get dinged for when you turn it in. It lets you review and make a decision on any potential repairs.
I think the most I have ever paid with any lease was $600 including disposition fee.
2015 M3 - Mineral White, Sonoma, Exec, LED, Adaptive Suspension, HK, 19" Light Alloy, 6MT ED 7/7/15 - On Order w/Adrian
2013 535i - Space Grey, Biege, M-SPort, Premium, Tech, Cold Weather, Luxury Seating, PDC, 6MT ED-10/11/2012 - PCD - Greg Poland