Marcus Munitions has expanded its business with Storage Deck Upgrades (SDU) in Borderlands 3. In previous games, these could be purchased at Crazy Earl’s Black Market. Earl only accepts Eridium for his services. Marcus, on the other hand, accepts regular cash money. And you know it, “No Refunds!”
Table of contents
What are storage deck upgrades?
Storage Deck Upgrades allow you to increase the amount you can carry. Your inventory is divided into multiple categories, therefore, there are upgrades for the different types of ammo, your grenades, backpack size, bank space, and the ‘Lost and Found’ Machine.
Each type of SDU can be purchased multiple times but as your inventory increases, so will the price of each upgrade.
SDU Items
| SDU Type | Upgrades | Capacity Increase | Max Capacity |
|---|---|---|---|
| Pistol SDU | 10 | +100 Pistol ammo | 1200 |
| Shotgun SDU | 10 | +20 Shotgun ammo | 280 |
| SMG SDU | 10 | +180 SMG ammo | 2160 |
| Sniper SDU | 13 | +12 Sniper ammo | 204 |
| Assault Rifle SDU | 10 | +140 Assault Rifle ammo | 1680 |
| Rocket Launcher SDU | 13 | +3 Rocket Launcher ammo | 51 |
| Grenades SDU | 13 | +1 Grenade | 13 |
| Backpack SDU | 13 | +3 Backpack Inventory slots | 50 |
| Bank SDU | 28 | +5 Bank Space slots | 440 |
| Lost & Found SDU | 10 | +1 Lost item slot | 15 |
How much do SDUs cost?
The price of an SDU type will increase after each purchase. High-level SDUs can become expensive, therefore, you should check out my Money Guide as those tips & tricks really help you on your way to easily purchase all these upgrades in Borderlands 3.
| SDU Level | SDU Cost |
|---|---|
| LVL 1 | $1.000 |
| LVL 2 | $3.000 |
| LVL 3 | $9.000 |
| LVL 4 | $27.000 |
| LVL 5 | $81.000 |
| LVL 6 | $243.000 |
| LVL 7 | $729.000 |
| LVL 8 | $2.187.000 |
| LVL 9 | $3.280.500 |
| LVL 10 | $4.374.000 |
How much inventory space do I have?
One of the big questions for Borderlands 3 is how much stuff you can carry with you. Well, I can tell you that you will start the game with more backpack space and end the game with more inventory space than in previous games.
| Storage | BL2 | BL3 On Release | BL3 After Patches |
|---|---|---|---|
| Max Backpack Size | 39 | 40 | 50 |
| Max Bank Space | 24 | 50 | 440 |
| Max Lost & Found | – | 13 | 15 |
SDU Changelog
Patch 4 Update – Nov 21, 2019
Gearbox Software increased the backspace and SDUs with a patch update alongside the release of Maliwan Takedown & Mayhem 4. All characters now begin the game with 20 bank slots instead of 10. The existing Bank SDUs will give everyone a total of 100 available spaces. An additional 10 Bank SDUs are available to purchase in Marcus’s shop on Sanctuary III using the in-game cash currency, each awarding 20 spaces, for a grand total of 300 total bank spaces!
Patch Update – Sept 10, 2020
Gearbox Software added a few more SDUs alongside the release of DLC4: Krieg and the Fantastic Fustercluck.
Storage Deck FAQ
You can purchase storage deck upgrades from the Marcus Munitions store. Marcus is located on Sanctuary III. You can find his store on the upper level across from Moxxi’s bar.
You can increase your backpack inventory space by purchasing “Backpack SDU” from Marcus on Sanctuary 3.
You can increase your Ammo SDUs from Marcus on Sanctuary 3 to increase your ammo capacity per weapon type.
