They are mostly there for supporters as we have to make a living as well.
This one however is available to all, in the coming update there will be an extra one.
"Greedisgood" gives a bunch of money.
FYI - based on many, many playthroughs, besides drinks, the most money players would need is less than $20k. Everything more expensive will be made affordable through regular gameplay.
Our goal with Lewd Town Adventures is to avoid the need to grind stats or cash, so you can enjoy the game without grinding anything but pelvises... ;)
Hint: Do not grind money to buy the house.