How much does an indie game need to sell in general to be profitable for the dev?

[RaptorChrist]

There are many indie games that are only one-man dev teams, and revenue is of course a product of sales and price. I think many indie devs get by with mediocre sales as they oftentimes don't spend anything on marketing. Also, many indie devs work on games as a hobby, so if the game doesn't sell, there isn't really an expense to offset anyways.

Edit: It does make me wonder how rich the creator of Stardew Valley is.