Ohhhhh, I didn't calculate the highest price in June. I miss read the problem. In May, the range was 15,000 and the lowest selling price $4,500, meaning the highest price was 19,500. In June, the range was 16,500 and the lowest selling price 6,100, meaning 22,600 was the highest price.

I need to be more careful while reading.
Thank you!!!!!! A