This is an excellent point, and it doesn't only apply to art/design.
In almost any intellectual domain, including coding, the models are already ahead of the average human. But instead, we compare them to the very best humans, which almost no one on the planet has access to.
$20 for a lot of access to better-than-average is a world-changingly good deal!
This reads like the opening scene of the Monkey’s Paw. Doubt it will feel like a good deal in the long run.