I see buyers around 110-111. While the sales are close to them, the sales are very close together too, which is the main reason why I would use both sales here.

If buyers were higher at the time of the sale(s), and show to be consistently above a sale, then it is usually safe to reject it as an outlier. The same goes when you have multiple higher sales, and one much lower sale close to or at buyers value; in that case you can also exclude it as an outlier. Its decided case-by-case as there are too many variables to condense it into a one-rule-fits-all