My Step-by-Step Process for Listing Pokémon Cards on Cardmarket

The Core Problem with Listing on Cardmarket

If you've sold on Cardmarket, you know the platform can be a challenge. It's an older system that frequently experiences slow-downs and even outages. Trying to list cards directly through their interface is a pain, especially if you're listing more than just a handful of singles. As your volume grows, these problems become a major bottleneck.

The platform is very old... if you tried to list there cards on card market directly it's a pain especially if you list multiple cards.

The Solution: An API-Driven Workflow

To get around these limitations, I started selling via Cardmarket's API. This lets you manage your inventory in a separate system and have it sync automatically. The only official partner that enables this is a service called TCG Power Tools. It acts as your central inventory management system.

The basic process is: you create a CSV file of your cards, import it into TCG Power Tools, and it handles the slow process of syncing everything to your Cardmarket store. It's not instant, but it's automated. The fee for TCG Power Tools is based on your sales, so if you sell nothing, you pay nothing. For me, it's the best way to do it.

Step 1: Batching and Pre-Sorting Your Cards

My process starts when I have a full box of unlisted cards, usually around 400-500. Before I do any scanning, I do some basic prep work.

• Sleeve everything: I make sure every card is in a penny sleeve.
• Sort by language: I have a mix of English and German cards, so I separate them into piles. This is a crucial first step.
• Handle duplicates: For cards where I have many copies (10+), I set one aside for a photo and just count the rest. For smaller stacks of 2-3 duplicates, I just photograph them all; it's faster than trying to remember the count later.

Step 2: Taking Photos and Transferring Files

Once the cards are sorted, I take photos with my smartphone. I don't do anything fancy. After taking the pictures, I upload them all to a folder in Google Drive. This makes it easy to access them on my computer in just a few minutes.

Step 3: Identifying Cards with NeoSatoshi

This is where the real time-saving happens. Instead of manually typing out card names, I use software to identify them from the photos.

1. In the NeoSatoshi dashboard, I go to the 'Listing Cards' tool.
2. I drag a batch of images (usually 20 or so at a time) into the uploader and start the detection.
3. After a few minutes, the tool will have identified every card from the images.

Next is verification. I go through the list and confirm each detection. The software highlights cards it's less confident about, which is helpful. I use keyboard shortcuts to quickly mark cards as 'correct' or 'incorrect'. If I find a mistake, or need to specify a stamped version like a 'Play' promo, I can easily correct it. Once everything looks good, I'm ready to export.

Step 4: Exporting for TCG Power Tools

From the verification screen in NeoSatoshi, I select the 'TCG Power Tools' export option. This generates a perfectly formatted CSV file that TCG Power Tools can read. This file includes all the card details needed for the next step.

Step 5: Importing and Pricing in TCG Power Tools

With the CSV downloaded, I head over to TCG Power Tools.

• I go to 'Listing' and 'Import a file'.
• I upload the CSV from NeoSatoshi. The first time you do this, you may need to map the columns, but it's straightforward.
• The system imports the data, automatically consolidating duplicates into single line items with a quantity.
• Next, I use the 'Auto Pricing' feature. I have a rule set up to price my cards at 140% of the trend price, but you can define your own rules.
• Important: I always manually double-check the prices on more valuable cards. The auto-pricer uses Cardmarket's trend price, which can sometimes be inaccurate. I'll look up the card on Cardmarket directly to be sure.

Once I'm happy with the prices, I select all the items and save them to my inventory. TCG Power Tools then begins the process of syncing them to my Cardmarket store.

Bonus: Syncing to Shopify

A great side benefit of this workflow is for Shopify sellers. If you connect your Shopify store in TCG Power Tools, it can sync your inventory there as well. The best part is that it will automatically pull the images I used for scanning in NeoSatoshi and use them for my Shopify listings. I don't have to do any extra work; the images show up on my Shopify store within about 30-60 minutes.

Final Takeaway

This process turns a frustrating, manual task into a streamlined, batch-oriented workflow. By using the right tools to create the data (NeoSatoshi) and manage the API connection (TCG Power Tools), you can list hundreds of cards on Cardmarket in a fraction of the time it would take to do it manually. It saves a huge amount of time and is the most efficient way I've found to sell in Europe.