Tiny Tina's Wonderlands

Microtransactions in Tiny Tina's Wonderlands are summarized as...

The game does not contain any microtransactions at launch. There are many cosmetics, but they are earned through regular gameplay.

There is a season pass which will grant you access to 4 future DLC. Purchasing the season pass will also grant you unique cosmetics.

There are 3 editions of the game, Standard, Next-Level, and Chaotic. The Next-Level edition consists of mostly cosmetics, where as the Chaotic will also unlock the Season Pass.

Contains one or multiple Season Passes, encouraging the purchase of unknown DLC you might never have purchased otherwise.
Has a "deluxe" edition of the game which features (almost) nothing but in-game cosmetic items.
Features unique cosmetic rewards for pre-ordering the game.
Contains no microtransactions, but does contain some smaller scale DLC that provide extra content.