Borderlands 4 Vend of the Line Walkthrough
Complete guide to unlocking the legendary vending machine and securing your epic weapon reward
This comprehensive walkthrough will guide you through the Vend of the Line side mission in Borderlands 4. Follow our detailed objectives to complete the mission and claim your legendary weapon reward.
Note: This side mission is not repeatable, so make sure to follow our guide carefully to avoid missing out on the exclusive trophy/achievement!
Vend of the Line Mission Contents
How to Unlock Vend of the Line in Borderlands 4
Before you can access this rewarding side mission, you must first meet specific requirements:
Prerequisite: Complete Siege and Destroy
You need to complete the "Siege and Destroy" main mission first before unlocking Vend of the Line. This story mission becomes available during the mid-game campaign.
Finding Penelope Streams in Carcadia
Once unlocked, you can start the side mission by talking to Penelope Streams in the center of Carcadia, southeast of the Ruined Sumplands. Penelope will be conversing with another NPC near a vending machine.
Borderlands 4 Vend of the Line Complete Walkthrough
Follow these steps carefully to complete the mission and unlock the legendary vending machine:
1. Inspect the Machine
After accepting the mission, wait for Penelope Streams' conversation with the Vault Gatherer Scout to finish, then talk to him afterward.
Inspect the back of the nearby vending machine to see two green dollar signs and two blue dollar signs. Interact with the vending machine and sell items in this exact order:
- Green Item
- Green Item
- Blue Item
- Blue Item
This will give you the first number of the coordinates to the Legendary Vending Machine.
2. First Vending Machine Clue
Head to the small island southwest of Carcadia. Be prepared for combat as there are enemies in the area!
Once clear, climb up the building on the left side using your grappling hook. The vending machine will be next to the shack.
Climb to the front of the building and interact with the switch to turn on the vending machine.
From the top, inspect the back of the machine through a hole to see the code. Then return to the front and interact with the machine.
Sell the following in order first, and then buyback what you sold in the same order:
- Green Item
- Purple Item
- Blue Item
- Green Item
This will give you the next number of the coordinates.
3. Second Vending Machine Clue
Head to Crumblehall in the northern part of Grindstone of the Worthy. You'll find someone crushed under a vending machine.
Follow the arrow on the back of the machine to the top of the building. Jump from the shack on the second floor and climb the ladder. Jump onto the cement and peep through the hole to see the code: two purple dollar signs and two orange dollar signs.
Luckily, you don't need to sell these items yourself. Return to the crushed person, and he will input the code for you, giving you the next coordinate number.
4. Third Vending Machine Clue
Head to Embracer's Buff in the northern part of Lopside. Talk to the customer in front of the vending machine.
The vending machine will start to vent. Hit it with a melee attack.
You can then either melee the customer or hit the machine again - both choices yield the same result.
Enter the building from the left side and inspect the back of the machine to see the code. Return to the front and sell items in this order:
- Green Item
- Purple Item
- Blue Item
- Purple Item
This will give you the final coordinate number.
5. Find the Legendary Vending Machine
With all coordinates complete, head to The Dusty Dangler, located southeast of Grindstone of the Worthy. Clear the area of enemies.
Inspect the back of the vending machine on the right side of the building to see the code. Then go to the front and sell items in this order:
- Green Item
- Blue Item
- Purple Item
- Orange Item
Follow the powered line from the back of the vending machine to a cave underneath.
Enter the cave and proceed downward until you reach the Legendary Vending Machine.
The vending machine will transform into Vend Zane and attack. Defeat this challenging enemy to continue.
After defeating Vend Zane, you can now use the Legendary Vending Machine to purchase any Legendary weapon listed for just $1.
Co-op Warning: If playing in co-op, only one player can purchase from the machine. The mission is non-repeatable, so other players will be locked out.
Borderlands 4 Vend of the Line Missable Trophy and Achievement
How to Unlock "All Things Vend"
Simply purchasing a Legendary weapon will lock you out of the "All Things Vend" Trophy/Achievement. To unlock it, you must perform these actions in the legendary vending machine in order:
- Sell Green Item
- Sell Green Item
- Sell Green Item
- Buy Orange (Legendary) Item
Look for a wooden board on the ground nearby with three green dollar signs and one orange dollar sign - this hints at the solution.
Vend of the Line Mission Rewards
Side Mission Rewards
Base Rewards
- Substantial EXP (scales with your level)
- Generous Cash reward
Weapon Reward
- Your choice of Legendary weapon from the machine
- Only $1 purchase cost for any legendary
If unsatisfied with the current weapon selection, wait 30 minutes for the inventory to refresh. Purchasing any item will complete the mission.
Related Borderlands 4 Guides
Main Mission Walkthroughs
- Siege and Destroy Complete Guide
- How to Defeat the Final Boss
- All Main Mission Rewards
Side Quests & Collectibles
- All Legendary Weapon Locations
- Claptrap Parts Collection Guide
- Eridium Farming Methods
Borderlands 4 Vend of the Line Video Guide
Final Tips for Vend of the Line
The Vend of the Line mission offers one of Borderlands 4's most unique side quests with a fantastic legendary reward. Remember these key points:
- Ensure you have plenty of green, blue, purple, and orange items before starting
- Complete the "All Things Vend" achievement before purchasing your legendary
- In co-op, decide beforehand who will get the legendary weapon
- Vend Zane is a tough fight - come prepared with powerful weapons
Good luck, Vault Hunter! This legendary weapon will serve you well in your adventures across the borderlands.