well i think it depends on in which country you are living , if you live in japan you will need more money for your daily life than if you live in ukrain. Everyday there are a lot of new bounties and airdrop you will probably need like 6hours a day to sort the good and the bad ones and to not miss the slot for a bounty.
That is what I intend to say. The cost of living is very different between countries, so it's mainly depending on where you live.