Mean, Median and Mode · Example 1

In, we looked at a stem-and-leaf plot of the sale prices (in dollars) of a particular collectible trading card:
$$\begin{array}{cc}\text{0}& \text{5 8 9}\\ \text{1}& \text{0 0 0 3 4 4 5 5 5 5 6 9 9}\\ \text{2}& \text{0 0 0 0 5 5 9 9}\\ \text{3}& \text{0 0 0 5 5}\\ \text{4}& \text{0 0 5}\\ \text{5}& \\ \text{6}& \text{0}\end{array}$$

What is the mode price?

OpenStax, Contemporary Mathematics · §8.3 Mean, Median and Mode · Example 1