At it's surface Escape From Tarkov has no microtransactions, no cosmetics, and no in-game purchases of any kind. It does however have several "deluxe" like editions that feature in-game benefits. This includes an increased bag size, early access, increased reputation gain with in-game traders, and additional in-game starter equipment.
Pay to win elements. This games contains purchasable items that make your character stronger.
You can (or could) gain early-access to the game by spending more money.
Contains one or multiple Season Passes, encouraging the purchase of unknown DLC you might never have purchased otherwise.
Includes mechanics that are intentionally slow or inconvenient, but can be bypassed with real money purchases.
Has a "deluxe" edition of the game which features (almost) nothing but in-game cosmetic items.
Includes all future updates, but there are optional DLC you can purchase.