If make from unreal’s assets, it will take at least 4 people (at least 2 guy should be unreal engine specialist) and 1 year.
Then $100,000 (1 year salary & office cost, etc per 1 guy) * 4 (man) = $400,000
Everyone needs to eat and that requires $.
$50k could be considered enough for one - or even a lot in some countries.
But between N people over X months while needing to buy Y assets… not so much.
I wouldn’t be too hasty jumping on the outsourcing wagon, unless you are making Mario or generic FPS, then I would find outsourcing programming, key artwork and animations, a logistical and management and directorial problem.
You need those key people together in one room, you could outsource some secondary and background assets and even then have issues of back and forth and time delays.
If you are saving 10 or 20K like this, you are losing 30K production time wise and coordination and I bet quality of work in many cases.
Besides 400K is enough for one year of: rent, hardware purchases, software rentals, 4 people salaries + one two limited freelancers in western Europe. If you are lucky to live in eastern Europe maybe hungary and poland you could maybe, maybe, do it for 20% - 25% less something that wouldn’t really make a whole world of difference on that sort of budget margin and may come with its own setbacks.
They usually see one lump saving, and don’t understand that lower quality (due to harder communication, not necessary low skills of outsourced team) create multpile time wasters for everybody around. And if you sum up that time wasted by everybody it usually turns out you paid more in salaries for wasted time than you saved up.
And then add frustration to this, somebody not having enough time for doing his\her job properly etc.