The trailer for season 4 of "How to Sell Drugs Online (Fast)" was released and the season premiered on April 8, 2025, exclusively on Netflix. The final season follows Moritz after he is released from prison and tries to regain control over his old company Bonus Life, which his former friends Lenny and Dan have turned into a successful legal supplement business. The story shows Moritz's struggle to reclaim his business in a changed world, with high stakes and drama reminiscent of Breaking Bad. The trailer highlights key moments and hints at major confrontations and schemes in the final season.

To view this trailer, one can visit the official Netflix page or YouTube channels hosting the official trailers for the series season 4.

This season marks the series' conclusion after four years following the protagonist's journey from an online drug dealer to a complex entrepreneur trying to navigate legal and illegal worlds.