# Products and SKUs: link every listing to what it holds

> A product is the thing you buy and sell. Each marketplace SKU links to one, with how many units a listing holds, so a 2-pack or a bundle counts the right stock.

Category: Stock and cost of goods · Web page: https://bookalyze.com/guides/products-and-skus

## Link your SKUs

**Where in Bookalyze:** Inventory → Products

Above the list, **SKUs that aren't linked to a product yet**: every SKU seen on orders, and every SKU Amazon or Walmart holds stock for, even if it's never sold.

- **Create product** makes a product named after the listing, with the SKU linked as one unit.
- **Link to…** links it to a product you already have.
- **Bundle** links one listing to several products, with how many of each it holds.

> **Tip:** A 2-pack is the same product with **2 units** per listing. Edit the product to change the units on a link.

## A product

- Name, your own SKU (optional) and notes.
- Its marketplace SKUs: link, unlink, or change units.
- Optional **weight of one**, for splitting freight by weight.
- Reorder settings: lead time, minimum order, units in a carton.
- Archive one you've stopped selling.

The list shows each product's SKUs, units sold in the last 30 days, and how many are on order.

## What you should see

What you should see:
- [ ] No SKUs left in "not linked yet" for anything you sell
- [ ] Packs show **×2** (or their units) on their badge, and bundles say **bundle**
- [ ] Units sold looks right for your best seller

## Related guides

- [Purchase orders and deliveries](https://bookalyze.com/guides/purchase-orders.md): Draft an order to your supplier, send it, and record each delivery as it arrives. Fill one in from an Alibaba.com receipt, and type the cost of one, the line total or the order total.
- [Cost of goods sold, month by month](https://bookalyze.com/guides/cost-of-goods-sold.md): Add your opening stock once, then post each month's cost of goods sold per marketplace at FIFO cost. Returns come back into stock; losses are written off.
- [Reorder: when to order and how many](https://bookalyze.com/guides/reorder.md): For each product: how many it sells a day, when it runs out, the last day to order, and how many to order, with Order now and Order soon.