... that being how do children get experience with responsibility without having that responsibility and possibly messing up? The answer is that they can't.
Here Beaver takes an interest in ice skating, but starts out wanting an expensive pair of ice skates that will take the lion's share of what he has saved. Furthermore, he doesn't want his parents tagging along when he buys his skates - He says it makes him feel like a child, which he actually is. But Ward and June relent and let Beaver go to the store without them to buy the skates. Once there, he is taken advantage of by a salesman who sells him a pair of skates three sizes too large, telling him that all skaters get oversized skates so that they can fit the three pairs of woolen socks that they'll need into the skate. Beaver quickly finds out that he's been had, but doesn't feel like he can go to his parents to admit his mistake.
This episode was directed by Hugh Beaumont (Ward), but it has the typical family dynamics and feel of a Leave It To Beaver episode. What makes it a bit different for this series is the presence of a predatory adult - the salesman - taking advantage of the naivete of a child. Perhaps Hugh Beaumont used his earlier experience in film noir to well direct the behavior of such a person.