Even for Indie developers, if $19/month is not a trivial component of your budget, for something as foundational as this, you can't afford to be making games.
Epic's marketing is correct here; if the engine is worth anything to you at all, it's worth way more than what they're asking here. If it can't save you $200's worth of time and effort in one year, it was a bad choice to ever go with it. (That's not rhetorical; there are certainly cases where this is the wrong engine and isn't worth it for your project, even free. Being industrial strength comes with its costs, and you may be better off with something that has traded power for ease-of-use and speed of development.)
Epic's marketing is correct here; if the engine is worth anything to you at all, it's worth way more than what they're asking here. If it can't save you $200's worth of time and effort in one year, it was a bad choice to ever go with it. (That's not rhetorical; there are certainly cases where this is the wrong engine and isn't worth it for your project, even free. Being industrial strength comes with its costs, and you may be better off with something that has traded power for ease-of-use and speed of development.)