I'm here to back you up, @merykat63-gmail-.

You'll want to make sure that the items/materials have a Sales price/rate. This way, when you add the item to an invoice, it'll show the rate and amount based on the price you enter.

Here's how:

1. Click the Gear icon, then select Products and Services.
2. Find the item with zero Sales price and click Edit under the Action column.
3. In the Sales price/rate field, enter the amount how much you sell the materials.
4. Click Save and close.
5. Then, repeat steps 2-4 for the rest of your materials.

I'm adding this article for more details: Edit a product or service item.

Just in case you want to group your products and services, feel free to check out this article for the detailed steps and information: Group your products and services into different categories.

Please know you can continue to reach me here with any additional questions. Thanks for coming to the Community, wishing you continued success.