Earlier quoted context omitted.
That brings up a question: What can you do to earn $50 in 24 hours? Unless you already have mturk the waiting period is days to weeks if you're not rejected. Fiverr/Upwork would all require a large amount of luck to make $50 in one day as communication with client and turn-around time could take 12-24 hours before even starting a small one hour project. CL might be the best way to make that money in that time period…
Is it really possible to generate $50/day on mturk? What kind of tasks would pay that much?
I've seen that there are a number of tools (usually like browser extensions) which allow you to filter and sort HIT offers for the best use of your time.