Garudin: [...]
"In addition to the above goodies, the Digital Deluxe Edition includes:
GOG gift code for Wasteland 1
GOG gift code for The Bard's Tale"
Now the "goodies" are free and not part of the DDE so the DDE outside of the game itself is Wasteland 1 and The Bard's Tale but it says before each "GOG gift code for" now gift means "something given voluntarily without payment in return, as to show favor toward someone, honor an occasion, or make a gesture of assistance; present." and is generally thought of in those terms so essentially they are simply charging more because they can if there "Classic Edition" coming later.
If that wasn't enough GOG on the same page is offering a package deal of Wasteland 2 Digital Deluxe Edition + Wasteland 1 for 6 dollars more essentially charging you 6 bucks more for technically a second copy of Wastland when in reality most people will just be spending 6 dollars more for nothing.
Last but not least going to Wasteland 1 page shows that the game COSTS 6 dollars itself so that bundle isn't even saving you any money as lots of bundle deals do, it's literally just Wasteland 2 DDE and Wasteland 1 thrown together both at the same price.
With all due respect, you either don't visit/ purchase frequently on GOG or deliberately twist the meaning of some terms used.
"Included FREE goodies" is a standard term used by GOG on every single game page to denote the extra content that comes with a specific edition of a game which in turn comes at a specific price point. This does not make them automatically "free' as in "free beer" regardless of the edition of a given game, and Wasteland 2 is no exception.
Second, you interpret "gift" out of context, using its general definition. The term you should be looking at is "gift
code" which stands for the GOG code of a given game that you can either redeem yourself or gift to someone else if you already have the game of feel so inclined to do so. Now, in the specific case of
Wasteland 2, the gift codes are additional extras that only come with the DDE of it, and work as an extra incentive for people who value the other extras enough to get this edition.
Regarding the "BUY SERIES" on the page of
Wasteland 2 DDE - I'll give you that it's misleading and confusing and shouldn't be there. Only reason I can think of, is that the game pages use the same template and the system automatically relates games within a series and displays that bit on the game page. It will however make sense when the Standard Edition goes live, as
Wasteland 1 won't be included.
Last but not least, yes there are specific series that grant you a discount if you complete them, but keep in mind that those are special deals that GOG has in place with the devs/ pubs, and that as many series don't give you a discount for completing them.
If you think the "BUY SERIES" in the context of
Wasteland 1 and
Wasteland 2 Standard Edition, then it's another series that just doesn't grant you a discount for completing it.
Please note that all the above are meant only as clarification.