But 25$ is quite an embarrassment. Nothing would have been better in that case.
According to the story, no. The regular employees in the regular system failed, and OP person decided to act like an owner and save the company, outside of job responsibilities, covering up for management's failure to build and test a reliable system. Did the OP person get paid like an owneror promoted to a leadership position for being a leader? No.
And also a very long uncomfortable conversation with whichever architects or seniors decided it was okay for Black Friday pricing to only be uploaded five minutes before midnight - what the hell is that about?
If you pay a one-off bonus for outstanding work, make sure you tie it to something specific the employee can understand. If it's a reward for a massive deal decide in advance if you want to pay out similar bonuses for similar deals in the future and what the rules are.
An employer-employee relationship is not a friendship no matter how much you like each other. It's a dependent relationship and it needs rules to protect both sides. A five figure bonus is a big deal for many employees so treat them with the dignity they deserve by making sure they can understand the conditions. If you think there aren't any that just means you haven't spelled them out or don't want to be held accountable.