Accumulating unused items around the house can turn into a modest source of income if you sell them well. However, second-hand trading doesn't end just by uploading an item. Depending on how you take the pictures, what you write in the sales post, and how you set the price, the likelihood of a successful transaction can vary significantly.

Yoo Yeon-seung (37, residing in Yeonsu-gu, Incheon), who goes by the nickname "1pyeong President" and authored the book "I Make 15 Million Won a Month on Danggeun Market," learned the transaction methods and buyer psychology of the local second-hand trading platform "Danggeun" through various trial and error.

While the first part of this series looked at what, where, and when to sell, this second part outlines the ultimate "reselling secrets" with Yoo, ranging from writing the sales post and pricing to handling items that just won't sell.

First Impression Matters: Make Them Want It from the First Photo

Second-hand trading has a different vibe from online shopping, where consumers search specifically for the lowest price. People often buy items impulsively simply because they caught their eye while scrolling through their feed without any particular objective. This is why Yoo describes Danggeun as "Instagram for people in their 40s and 50s with their wallets half-open."

The first gateway to triggering buying psychology is the photo. Above all, it is crucial to give the impression that the item has been "neatly cared for" in the very first photo.

Shoot in a clean background with the surroundings organized, and ensure the overall appearance of the item is captured at a glance. Afterward, show the product's condition from various angles, and take pictures of the packaging box or included components together if available.

Yoo also has his own unique photography trick. When taking pictures, he sometimes frames them so that his wife's natural hand appears in the shot. It is a method of building trust by utilizing the consumer's vague perception that women tend to manage items more neatly. Ultimately, this means that even a single photo takes into account the emotions and preconceptions felt by the buyer.

However, scratches or signs of wear and tear should never be concealed. The first photo should display the overall impression, while flawed parts must be clearly revealed through separate pictures. Yoo noted, "Hiding scratches or defects can lead to a price cut during the actual transaction or even turn into a dispute later on."

Sales Posts: Prioritize 'Searchability' Over Wit, Plus a Touch of Trust

Titles are best written so that people can tell what is being sold at a glance. Because the platform's algorithm needs to properly recognize the type of product to increase the likelihood of exposing it to interested users, substance matters. For instance, rather than prioritizing wit—such as writing "Buy this shirt and you'll get a girlfriend today"—when selling clothes, include information people actually search for, such as the brand, product name, and color. If it's a Christmas tree, the title should clearly state "Christmas tree" right from the start.

The main text should go beyond merely informing buyers of the purchase date, frequency of use, product condition, components, and scratches; it should also add trust in the seller.

There is no need to spend excessive time writing a long sales post. Organizing basic information, generating a draft using generative Artificial Intelligence (AI), and then tweaking it to match the actual condition is more than enough.

Pricing as the Last Card: Ask Full Price for a 'Full-Box' Item

Prices are determined by comparing the market price and condition of identical products. If quick disposal is the goal, you can list it cheaply, but if the condition is good and demand is sufficient, there is no need to cut the price drastically from the beginning.

In particular, "full-box" items that retain all packaging boxes, manuals, and accessories have the upper hand in maintaining their price.

Yoo said, "There are people who will pay 10,000 won more for a 500,000-won product if the box and components are complete," adding, "If the condition is good, rather than lowering the price from the start, it is better to get its full value."

Still Not Selling? Try These 'Secrets' Before Lowering the Price

1. Boost the 'Appeal' First

If you uploaded a sales post and haven't received any inquiries, you don't need to slash the price right away. The order Yoo recommends is: Photos $rightarrow$ Sales Post $rightarrow$ Price.

First, check if the first photo stands out, and retake it if it falls short. Next, review the sales post to see if search keywords like the product name and model name are properly entered, and whether the product's advantages and condition are fully revealed. Utilizing the platform's "bump" (re-upload) feature to gain exposure again is also a method. Only when there is no response even a month after modifications should you adjust the price as a last resort.

The necessary mindset at this stage is the so-called "Post and Forget." Yoo advised, "Instead of constantly looking at it and feeling anxious that it isn't selling, it is better to just put it up and wait. When someone who needs it comes along, they will eventually contact you."

2. Close the Deal Immediately When an Inquiry Arrives

However, the moment an inquiry comes in, the story changes. You should be patient while waiting, but move quickly when a buyer appears.

Yoo emphasized rapid response above all else. If you miss the exact moment when a buyer's mind shifts to "Should I buy this?" while scrolling through their feed, their finger will quickly move on to another item.

Conversations do not need to be overly formal. Since local second-hand trading has a stronger character of "trading with a neighborhood neighbor" than online shopping malls, responding in a friendly and natural manner is better than giving mechanical answers.

However, if you experience repeated excessive price negotiations or feel a sense of unease during the conversation, there is no need to force the transaction. In particular, with "door-knob transactions" where items are left in front of the house, you need to protect yourself by terminating transactions early with counterparts whose proximity makes you feel anxious about exposing your residential area.

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