Difference between Charge like a bull at a gate and Charge like a wounded bull

charge like a bull at a gate—(Austral. sl.) act impetuously or with violence:

• I was naive, but also like a bull at a gate, charging forward without stopping for long to consider the consequences.

charge like a wounded bull—(Austral. sl.) overprice an item or service:

• When waiters take your order, they often get you to order all kinds of extras for which they can charge like a wounded bull.