Most buyers I talk to have no idea this is even an option. In the current market, 68% of sellers are ottering some form of concession to get their homes sold. Closing cost credits. Repair allowances. Price reductions. But the one most buyers never think to ask for is the one that can save them hundreds of dollars every single month.A mortgage rate buydown. Here is how it works. Instead of asking the seller for money back at closing, you ask them to use those funds to buy your interest rate down.