> ## Documentation Index
> Fetch the complete documentation index at: https://docs.arbitrageone.de/llms.txt
> Use this file to discover all available pages before exploring further.

# How do I maintain CoG (Cost of Goods) in ProfitTracker?

> Store, batch-upload or import Cost of Goods per SKU in ArbitrageOne's ProfitTracker.

## Short description

**CoG** (Cost of Goods) is the purchase price ArbitrageOne uses to calculate your profit. By default the system uses the values from your recorded purchases. For SKUs without a purchase entry — e.g. from old stock or Sellerboard imports — you can store the CoG here manually.

## Page layout

### Notice at the top

> By default, calculation uses the purchase prices for which a purchase has been recorded in A1. If no purchase exists for an SKU, the values stored here are used as the purchase price.

### Table

| Column            | Content                           |
| ----------------- | --------------------------------- |
| SKU               | Seller SKU                        |
| ASIN              | links to Amazon                   |
| Purchase price    | current CoG                       |
| Prep fee per unit | for multipacks or prep surcharges |

### Buttons in the top right

* **Add** — manual entry per SKU
* **Batch Upload** — upload CSV with SKU → price
* **Sellerboard Import** — tutorial link for migration

<img src="https://mintcdn.com/arbitrageonegmbh/FCkSquCanRKwqqnE/articles/profittracker/images/cog-pflegen-01.png?fit=max&auto=format&n=FCkSquCanRKwqqnE&q=85&s=2dd649948e0635428cfbca0b739c595c" alt="" width="1200" height="363" data-path="articles/profittracker/images/cog-pflegen-01.png" />

## Step-by-step: Set a single CoG

### Step 1: Find the SKU

→ Open directly in the app: [app.arbitrageone.de/cog](https://app.arbitrageone.de/cog)

Use the DataTable search field at the top left to find the SKU.

### Step 2: Add

Click **Add** (or the edit button in the row) and enter SKU, ASIN, purchase price (net) and prep fee (net). Via **+ Add row** you can enter multiple SKUs in one go.

<img src="https://mintcdn.com/arbitrageonegmbh/FCkSquCanRKwqqnE/articles/profittracker/images/cog-pflegen-02.png?fit=max&auto=format&n=FCkSquCanRKwqqnE&q=85&s=bbaa856b4c34da8921bbc30c32d0cf78" alt="" width="755" height="385" data-path="articles/profittracker/images/cog-pflegen-02.png" />

### Step 3: Save

Saving applies the value immediately to all future profit calculations.

## Step-by-step: Batch upload

### Step 1: Prepare CSV

Create a CSV with the columns `seller_sku;cost`. The decimal separator is a dot (e.g. `12.50`).

### Step 2: Upload the file

Click **Batch Upload** and choose your file. You'll see a preview before the values are applied.

### Step 3: Apply

Confirm — existing entries are overwritten, new ones are created.

## Important notes

* Values from *Record Purchase* take **priority** over manually stored CoGs. Recorded purchases don't overwrite the manual value, they are used directly.
* CoG is stored in the currency of your home marketplace.
* Sellerboard migration: export the SKU/CoG list there as CSV and use the batch upload.

## Common issues

**Issue:** "My CoG is ignored in ProfitTracker."
**Solution:** A recorded purchase probably exists for the SKU — it takes priority. Check your purchases or delete the wrong entry there.

**Issue:** "Batch upload throws an error."
**Solution:** Often the wrong separator or a comma as the decimal separator. Check the format with a text editor.

## Related articles

* [ProfitTracker: Reconcile reimbursements](../profittracker/erstattungen)