How much does a new rune page cost?

I'm curious about the pricing of a new rune page. Could you please enlighten me on how much it costs? I've been hearing rumors about varying prices, and I'm eager to get a concrete answer. Is the cost fixed, or does it vary depending on certain factors? If there are any discounts or promotions available, I'd like to know about them too. Overall, I'm just trying to get a clear understanding of the investment required to purchase a new rune page. Could you assist me in this matter?