We are designing an UI of a game like the following：
Once you enter the Green button (Start) you start to fight. However, there's a limit of restarting the fight. When it come to the limit, the game is going to ask you to buy more admissions for restart the fight. Moreover, there is a limit for the shopping. Once it's over 10 times, the "Buy more admissions" button will be unveiled.
Here is the question:
My colleague designed it as changing the button content "Start" to "Buy more admissions”，and the open a second-level UI to shop more admissions for the fight. However, I prefer no changing of the button and open the admission-shopping UI directly, and tell the players what to do.
Actually, I don't know whether my coleague's design is common in UI Design. It seems not a big deal about the two ideas, but I want to know some suggestions about that.