Dear __________,
Thank you so much for all the hours you put in helping us look for the perfect house. After many weeks of driving around looking at various homes, and having deals fall through, you performed a miraculous act. You found us a lovely house that we can afford in a neighborhood with good schools for the kids. You are a terrific realtor and friend. And thank you so much for the beautiful house-warming gift basket! It was a wonderful surprise to find it waiting for us there on the kitchen counter.
(YOUR NAME HERE)