Unfortunately you need alot more than one kernel for things to get popping. When I see one obviously underpriced sale, I almost always ignore it as do most agents. Outliers are just that. Similarly when I see one obviously overpriced sale, I almost always ignore that also. TG’s Popcorn effect is nice analogy but I just dont see things working that way on the street level.
If a buyer tries to use the low sale as a comp my response is simple and straight forward. – “Yes that was a great deal. You should go buy it today!”