Make Me Move is a free and easy way to tell others the price you'd be willing to sell your home for, without actually putting it on the market.Here's more on Make Me Move.
I had a two-system HVAC job done to my Baltimore house in 2004 and it cost me $14,000. I got a few bids and they were all within $500 - $1000. maybe there's collusion among HVAC people. :)By the way, the AC was well worth it!
Home of Former U.S. Attorney General Alberto Gonzales