$300 plus S/H, which I work for FedEx so I can get a discount for it....
Had this on my 2010 E350 EB for a about 8 months. I ended up going with a Weldtec 6" kit.
99 - 09 E250/E350 TRUCKS 2WD FRONT LEVELING KIT
With factory tires this lifted my van in front to 36.5" in front (wheel well) and the rear coil over shocks lifted the back to 36.25" You can see pics on my profile.
Kit comes with:
Front Bilstein shocks (factory shocks will not work with lift)
Rear Monroe HD coil over shocks
***NOTE: You will need to buy camber/caster pills, roughly $20