I think I also added code that the money has a chance to have a bonus income if you have high rating enough rating when a customer buys from a shop, also the number of customers change slightly as the rating changes. Though I'll likely be doing more balancing such that maybe there is some form of idle income that is gained, and perhaps play around with the customer limit (this option I'll be messing with when I get to character refinement though so don't worry ;3).
Now that I'm thinking about it, I forgot that about the Easter Egg when I duplicated the original room as it had a lot of the information set up already for me to quickly make another location as Gamemaker Studios is a little quirky like that XP The Egg is hasn't been fully fleshed out as you can tell by when the sizes start and get extremely large, it was left in because I messed with a different direction for character weight gain during the jam but didn't have the time to complete the system, and I didn't want it going to waste so I improvised an "Easter Egg" for a possible future system for fatties XP