Steam will begin offering discounted bundle prices for gamers who already own titles that are included in the bundle. That's right, if there is a set of games that you are interested in buying, but already own any of the titles, you'll only have to pay for the rest of the ones you don't own. There will be a new 'complete the set' option, allowing you to avoid paying for the same game again. PCGamesN obtained an official document from Valve that documented the changes.
"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. 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."
It's great to see Steam Bundles offering this new option, as no-one likes paying twice for the same game. Does this interest you at all? Let us know in the comments!