If actions rely on the result of something previous, I’m fairly certain they wait to run until the result is ready, otherwise that feature would be creating way more problems for people!
See this:
Nothing wrong with changing a thing from the result of previous, but you’d save yourself potentially three additional actions that would need conditions by including the price change in the original 3 actions that are already modifying that same field and are already running under conditions. Unless I’m missing something about the sequence, I don’t see a reason why you’d want to split it up further.
It’s like making a change to a user’s full name field to add a first name in one action and then making another change to the same user’s full name field to append the last name when you could have just done first and last in a single action.