What is the most profitable item to sell to NPCs in the Seven Day World? What is the most profitable item to sell in the Seven Day World?

Many players often find themselves in an awkward situation in the Seven Days world, where their backpacks are full but they can't sell items at a good price. Despite stockpiling a large amount of materials, they find that the profit from selling to NPCs is extremely low. So today, I will introduce what items are the most profitable to sell to NPCs in the Seven Days world. In our daily sales, the unit price of basic wood and stone is less than 1 battery, while high-value items are difficult to obtain stably. Below, I will teach you how to solve this dilemma.

The basic resources in the game (such as wood and ore) have very low direct sales returns, but their value doubles after processing. For example, by distilling seawater to get crude salt and then smelting it into refined salt ingots in a furnace, the unit price can reach 35 batteries, which is much more efficient than directly selling raw materials. Similarly, players specialized in sulfur chemical engineering can process sulfur into acid, with each bottle selling for 120 batteries. The water pump in the contaminated area can stably produce 20-30 bottles of contaminated water per hour. It is recommended to build an automated production line at the base to concentrate on producing items like salt and acid, avoiding the inefficiency of selling low-value resources piecemeal.

Weapons and armor dropped by killing mutants, if sold directly, are only worth a few dozen batteries, but the value of parts significantly increases after disassembly. For instance, disassembling a level 5 assault rifle can yield materials such as precision gears and titanium alloy plates, with a bundled selling price exceeding 200 batteries. A higher-level technique is to repair damaged equipment and install lower-level accessories—for example, repairing a level 6 bulletproof vest to full durability and adding inferior extended magazines and other redundant accessories, the NPC purchase price can reach 800-1000 batteries. Note to keep common accessories like military sights and extended magazines, as they can be repeatedly disassembled and used for multiple pieces of equipment to increase their value.

The contaminated area is not only a dangerous zone but also a stable source of goods. Carrying a water pump to extract groundwater yields contaminated water, which, after being processed by a water purifier into an acid mixture, can be combined with a fermentation barrel and pure water to produce acid in batches, yielding about 15-20 bottles per hour. Moreover, there is a chance of dropping acid (2-5 bottles each time) when killing mutants in the contaminated area. By using a stardust converter to trigger monster attacks, this cycle can be established. The five major bases' NPCs provide a weekly acquisition quota of 250,000 batteries, but different bases have different preferences. You can explore these on your own.

In the Seven Days world, the essence of making money is resource conversion. New players should avoid blindly stockpiling low-level materials and instead focus on the targeted production of high-value-added goods. Salt ingots, acid, and premium equipment can provide stable returns. The contaminated area cycle and base purchase limits are key to advanced efficiency improvements.