Why do programmers always assume every field is just like computing? Not everything gets cheaper.
Chemistry is a mature industry. Photopolymers are 50+ years old, and unpatented. There's no real reason to believe UV-cure resin will ever get much below $100/litre, which is a solid 10 times more expensive than ABS.
It's a different situation. Printer ink comes in proprietary cartridges - you can refill with lower-cost ink, but I think there's a different psychological barrier there than in the case of dumping resin out of a bottle into a tank.
There are perfectly good resins available for less than this one, and while there will surely be some difference in quality or properties, there's a good chance those differences will be slight. And their prices will all come down when they start being readily available by the liter bottle.
If not, then I see one thing I'll be getting into.
I work with UV-cure resins and I'll just comment that they are a bitch to work with. Remember, daylight is full of UV. Your interior lamps still emit some. So the moment you start working with this stuff in daylight, it starts curing. And once the process starts, you can't reverse it.
It's just not something that's consumer-friendly at this point.