Oh man!
They raised the price for their games and try to pretend it’s a worthy bundle for $12.
FYI: It only contains parts of the DLCs for 4&5.
Plus, the Tropico 5 key that you receive in this bundle differs from the Steam store sub, and does not contain the Isla de Vapor DLC (which you would otherwise get via a Store purchase).
I would probably only get the first tier. Not sure I need a lot more DLC happy games.
FYI: T1 is lacking this one
https://store.steampowered.com/app/57600/Tropico_3_Absolute_Power/
You can get the trilogy with
https://store.steampowered.com/sub/12169/
yeah, but for $1 that gets me 3/4 of the $20 steam bundle. Then I can pick up the last DLC on sale. Not worth getting BTA just for one DLC imo.
I was just pointing out the idea, and here is how you can get it for real cheap if you don’t mind a Russian site.
https://yuplay.ru/product/14778949/
Thanks @dogetail 
I’ve really loved Tropico ever since I bought the first game, way back when - on CD!
Thanks to our partners at Kalypso Media, you can now complete your Tropico 4 and 5 collections!
Get this bonus Tropico 4 content, if you beat the average:
Tropico 4: Apocalypse
Tropico 4: Junta
Tropico 4: The Academy
Tropico 4: Vigilante
And if you pay more that $12, enhance your Tropico 5 playthroughs with:
Tropico 5 - The Big Cheese
Tropico 5: Gone Green
Tropico 5: Inquisition
Tropico 5: Joint Venture
Tropico 5: Mad World
Tropico 5: Supervillain
Tropico 5 - Surfs Up!
Still an all-in or nothing bundle and sadly it’s still overpriced to me, for games heavily discounted years ago already 