Valve has launched the option for flexible pricing of game bundles on Steam, according to PCGamesN. In documents sent out to developers and obtained by the website, the company explains that prices customers must pay will change based on how many of the pack's included games they already own.

"With Steam Bundles, if a customer already [owns] some items in the Bundle, they will pay for and receive only the items not already in their account," Valve wrote to developers. "This allows the best fans of your series or franchise to 'complete the set' and get a deal on the remaining items in the Bundle."

This differs from how bundle pricing previously worked on Steam. For sets like the Valve Complete Pack, buyers would have to pay a flat fee regardless of how many of the individual games they already owned.

While the new pricing system has not been officially announced, certain bundles already reflect the change. We took a look at the Valve Complete Pack, which costs $92.70 for the full set of games. Having some of those games in your library, however, lowers that price, as seen below.

The Valve Complete Pack offers a 55 percent discount off the total price. This remains fixed; what changes is that the original price being discounted is lowered based on the games already in your library. That means that, instead of receiving 55 percent off $205.80 (the full cost of the Complete Pack), someone paying $49.50 for the bundle would have paid roughly $119 before the discount was applied.

It's not yet known if this new method of pricing has fully rolled out. We've reached out to a representative of Valve for confirmation.