---
title: Academy 6. Items
description: "Foundation, lesson 6: items and services, pricing and tax, inventory lots, archiving and price tags."
url: "https://theasst.com/docs/academy-6-items/"
updated: "2026-10-30"
category: Academy
---

# Academy 6. Items

*TBA Foundation · Lesson 6 of 9 · about 2 hours*

## After this lesson you can

- Tell an item from a service, and a lot from an item.
- Explain why items with history are archived, not deleted.
- Print a price tag.
- Say what a price change does and does not change.

## Why it matters

What you sell and stock is on every order, invoice and purchase order. Getting items right keeps prices, tax and inventory right everywhere else.

## Read

- [Items Overview](https://theasst.com/docs/items-overview/)
- [Price Tag Designer](https://theasst.com/docs/price-tag-designer/)

## The big picture

An **item** is something you sell or buy: a product or a service, with a price, a cost and a tax code. Stock items also have **inventory lots**: quantities received together, each with its own count and cost, so TBA knows how much is on hand and which batch an order came from. A price change affects *new* documents; issued invoices keep the price they were issued at. When an item has history you stop using it by **archiving** it, which keeps every old record intact. **Price tags** are designed once and printed from an item or an inventory lot.

## Try it

1. Open an item and find its price, cost and tax code.
2. Look at the lots of a stock item.
3. Print a price tag.

## Check yourself

Can you say what a price change does and does not change, and why an item with history is archived? A practice quiz and certification exams are planned for a later release.