Warn you if there’s a way you could get a product for cheaper before you purchase it.
ShiraNamiNani discovered this feature while purchasing Unrailed 2: Back on Track. At press time, this game was 30% off, for a total of $13.99. However, the Unrailed Collection Bundle, which includes both Unrailed 2: Back on Track and its predecessor, had a bigger discounted rate of 58%, meaning it only cost $13.58 – 41 cents cheaper than buying just the second game on its own. This is likely what triggered this alert, as it allowed them to not only save money but also get an extra game in the process.
"they will not be recommended to purchase the larger version if the total cost is still higher."
More Link: https://www.gamingbible.com/news/platform/steam/steam-store-addition-saves-you-money-194091-20251213
They've been doing this for a while now, I think it's neat
Sometimes you already own a game in the bundle so you get the game cheaper because you buy the bundle. Not only is it cool that's even an option, but Steam will tell you about it to save you money
It's even cooler when you own part of a bundle and steam alerts you that not only can you get the game cheaper by buying the bundle, but you'll get bonus games too
Big wins for the consumer all around