In this world, the reason technical artifacts were priceless was that they granted their users permanent power, making them the most expensive items one could purchase; a technique acquisition item.
But what about those who didn't want to spend that much money, or simply couldn't afford it?
That's where magic scrolls came in to solve the problem. Using magic scrolls didn't provide permanent effects, but they could grant the user power for a short duration.
As one might expect, these magic scrolls were valued based on their duration of effect and the power they bestowed. Legends spoke of some mythical scrolls that lasted a full year, but of course, that was just a myth, and most people didn't believe it.