Okay, can someone help explain this please???

So I just upvoted a few comments. They both didn't have any votes before mine so they were worth zero dollars. One of the comments was from a very small account, similar to mine, with the same reputation number. When I upvoted on the comment it was then only worth a penny. Okay so the next comment was posted by a user with over 1k followers and 58 reputation. When I upvoted that, it was worth 26 cents. Why the big gap? Was it the difference between the amount of reputation or the number of the followers? Any help or insight would be very much appreciated. Thanks.