We all (or most of us) know this game, whether we played it by bouncing a ball, jumping rope, clapping hands, or even just sitting on the stoop.
The author and illustrator have given this book a decidedly comic touch that I never had when I played this game - here I was, as a kid, like a FOOL searching for something reasonable to sell for "g" - and they have a goose and gorilla selling "giggles", of all things! The whole book tends this way - i has a great picture of the pair trying to sell ice cream to a very doubtful animal in the middle of a snowstorm, the couple for d sells "dust" - and you can see them blowing dust right into another animal's surprised face! It's a riot.
I'm not sure I like the way the individual animals are labeled at the bottom of the page... that text there makes you tempted to read it aloud, and that messes with the flow of the book. I would rather have had the animals listed in the back instead. And I don't like that they just made up a random space critter for an "animal that starts with x" - there are several creatures that have x as their initial, starting with x-ray fish and xeme and ending with xenops and xerus... although, as this was published in 1984, I suppose they weren't able to google it like I did just now! (Tell the truth, I don't like that alphabet books list things-starting-with-the-letter-x, as a general rule. I'd rather they listed things that show x in the way we USUALLY say it, so the x animals would be, like, a fox and a vixen or something.)
However, those details are trivial.