Great point, East. When I see a grill at an estate sale-- or even when I've missed one-- I head to the kitchen to look around. Anyone who keeps a grill will often have all kinds of cool accessories and tools *somewhere* (check the garage or shed, too). Once I had them slap a 'sold' sign on my Performer, I went into the kitchen and scooped up some marinade injectors for like a buck. And when I was wheeling the grill away, I spotted a Weber chimney starter in a corner and talked the guy into letting me have it for free.
The other thing I love about estate sales is the 'passing of the baton' nature of the transaction. I know a lot of us use the term 'rescue' for the kettles we rehab, and I certainly feel that at estate sales. Some person carefully kept this quality Weber stuff for *years*, cooking family meals and etc.. Then it kind of got rusty as they got too old to use it much, until the time came to sell it. And no one in their family even cared to take the stuff away, so yeah, it feels pretty good to know that you are giving it a good home. I always like to think the former owner and I are kind of like partners. But I'm a little crazy that way.
And yeah, I use an estate sale web service for email updates. The one I use in DC allows me to include search terms to alert me to grills, weber, etc..