Microtransactions in Destiny 2 are summarized as...
👎Premium currencies come in quantities that do not match the price of regular shop items, forcing you to spend more for less.
👎Requires additional purchases to play relevant content (such as expansions).
👎Contains one or multiple Season Passes, encouraging the purchase of unknown DLC you might never have purchased otherwise.
👎Often features items that can only be purchased during a limited time.
👎Includes a limited-time always rotating store with exclusive discounts and/or cosmetics.
👎In-game currencies can be purchased with real life money.
👎Frequently rewards in-game items for external purchases (e.g. Twitch Prime subscriptions).
👎Contains premium currencies that can only, or almost exclusively, be purchased with real money.
➖Free to play. Requires no up front payment.
➖Contains one or multiple Battle Passes.
➖Features unique cosmetic rewards for pre-ordering the game.
➖Has a "deluxe" edition of the game which features (almost) nothing but in-game cosmetic items.
👍Contains large scale paid DLC that could be considered a full expansion.