I'm 6'6" with a 36-inch inseam. I'm riding a huge old 1975 Schwinn Continental (The old Varsity came in the same size, but is heavier) with 27" wheels. (See my restoration blog at
http://1975continental.blogspot.com) I barely have the seat raised on this thing. I picked the bike up used (very) for $50.00 back in about 2003. There were millions of these bikes made in the 70's & 80's. They're deraillure-shifted ten speed road bikes, steel frame. These bikes are often overlooked in a world of 25-speed bikes made of carbon fiber, aluminum, and ultralight alloys. However, they fit tall guys like us well, and they're pretty durable. You can probably do a solid functional restoration on one for $100.00 - $200.00. It might cost you $400.00 or so to do a full restoration including aesthetics. It's a thought, anyway.
Regards,
Dan