250 seems like a lot for oem tires that most people can't unload when they want to. Don't get me wrong, I have been very impressed with the duelers, and like the look of the sidewall lugs.
But you could get a set of 35" mud terrains for 250 a piece.
Are you a Costco member?
Costco has good prices on tires and offers
Lifetime balancing
Lifetime rotation
Lifetime flat repair
Lifetime air pressure checks
New rubber valve stem
Costco Wholesale's road hazard warranty
Here are a couple of links to some nice BFG's
http://www.costco.com/Tires/Product.aspx?IV=true&YW=2006&MA=HUMMER+TRUCKS&MD=H 3&SP=0&MN=63347&cat=3961〈=en-US&MNo=63347&Prodid=11073536&Aspect=75&Diameter=16 &Speed=Q&Width=285
201.99 per tire for BFG 33" all terrains
http://www.costco.com/Tires/Product.aspx?IV=true&YW=2006&MA=HUMMER+TRUCKS&MD=H 3&SP=0&MN=63347&cat=3961〈=en-US&MNo=63347&Prodid=10025502&Aspect=75&Diameter=16 &Speed=Q&Width=285
217.99 per tire for BFG 33" mud terrains.
Those prices include mounting and the lifetime rotation, balancing, etc. as listed above.
I have also seen an entire set of take off duelers (wheels, sensors, tires) for under 500 bucks for the set at my dealer.
Definitely look around at other tire shops, and check Ebay for good deals on duelers if you have your heart set on them.