I don't see why we can't look into adding this suggestion. From looking at the suggestion, and from my understanding, you just want a way to purchase lots of golden apples. I have a better idea. Not sure if you've seen Skyblock, but in the shops, when you want to buy or sell, you have 3 options that you can use with 3 different mouse actions. Left-click, middle-click and right click. So my addition to this suggestion is compress the shop down into 1 slot for each food, but you can buy 3 different sizes for each, with the 3 different mouse actions. Most of the time, it would just be left and right click, so this is what I thought:
Carrots:
5 - Left click
60 - Right click
Steak:
1 - Left click
12 - Right click
Cake:
1 - Any form of clicking
Golden apple/God apple:
1 - Left click
5 - Right click
This method allows for 2 extra ways to buy food with different amounts without taking extra menu slots. This is also better because in the future, if more food was to be added, there's more room for new food. If you're wondering what it would look like in the classic shop menu, it would just be the offers next to each other, carrots then carrots then the next food etc.
Thanks for reading and let me know what ya think :p