Thanks for the feedback Headclot, it’s good to hear from all sides! 
I am feeling pretty certain about $49.99 at this point though [but not official, I’m considering all feedback]:
Considering the complexity of the system (it’s not just text being displayed in a box, there’s a considerable amount of features and careful design involved in remaining extendible and accommodating to a content creator’s latent needs), it has/would take a non-trivial amount of time and money to create. Unfortunately this means I need to sell a sizeable number of units before I start to see a profit at this price (after Epic’s cut, fees, and taxes).
Of course this depends on your needs, if simply throwing basic text in a box is all that you will ever need, this system might be overkill (and may even cost less than $50 for a custom solution :p).
Thank you