To buy a house... And get the TMs... and buy all the berries for the waifumon...and prepare for the next update where I need a bunch of potions cause I hate backtracking.
Eh, i get your point for the TMs. But allow me to kindly dissagree.
When you reach eclipse city, you have enough money for the house, even after buying the berries for lopunny and garde. Even if you are short due to buying a few healing items, the ranger quests alone give quite a bit of money. So the house is a non issue.
The TMs...you dont need em. Honestly. The waifumon have enough power due to stats and custom moves. You dont need the game corner TM's. But if you want to use other mons and thus the game corner TMs, yes money will be tight.
Healing items for next update? Why buy that many healing items before even knowing what you are gonna encounter? The entire game is bases on preparing for specific hurdles you encounter whitout alwaya knowing what to prepare for. If you want to brute force your way trough with healing items, go right ahead but if money is tight, you might want to be more carefull with how you spend your money.
There is no reason to debug in money or say that payday is a must have alternative. In my opinion, of course.