The best price on the b7800 I have gotten in the area is from Justin Reed at Antietam Tractor in Hagerstown. I ended up getting a b2910 from him and got a great price. His price beat any price I could get in Virginia by 500-1000 dollars. Justin's number is 800 553 6731.
This is the second tractor I've bought from Justin and he consistently has better prices than any dealer in Va, Md or the district of Columbia. It's well worth the drive to Hagerstown.