Fastest way to farm money?

[Sparrowhawk]

What's the fastest way to get rich? Just beat the game for the first time and I want to upgrade all of my weapons as quickly as possible!

[DarkSamus]

Play 4-1 over and over.

[HelenaEX2]

Play on veteran or higher. Or 5-3 and defeat wesker, the 5-3 is the most easy way to farm money, are 10k in 1 minute.

[retiago]

Play chapter 5-2 on the corridor full of lickers and you will ripe many lion hearts there
Restart the checkpoint for 1 hour.

[lord noodle]

Caves and the chapter with all the lickers try unlock infinite ammo for lhawk and your sorted

[Sparrowhawk]

Thanks for all the suggestions, can't wait to get rich.