I needed to make two changes to your content to get Equalize to work.
First, I needed to move the Card Image stacks with the icons out of the Equalize Item stack.
Second, I needed to remove the formatting you applied directly to the text. On all of the prices, you applied the centering by double-clicking the text and using the text formatting toolbar to center the text. On some of the other text, you applied a color to the text. I went back into the text items, highlighted the text and chose “Clear Formatting” from the Format menu. I then used the Card Paragraph’s setting to center the text.
I don’t know why the card image or inline formatting prevented Equalize from setting the height correctly. Maybe Adam @elixirgraphics will know when he has a chance to look at your page.
Try to get out of the habit of setting text formatting (color, size, alignment, etc.) using the text formatting toolbar. Most of the stacks have setting to do those things and it’s better and easier to just set it in the stack’s settings.