# Domain Model

## Core entities

- ItemTemplate: reusable defaults for common purchase types
- Item: individual acquired object being tracked for resale
- PriceEstimate: a resale suggestion from comps or manual input
- ItemNote: internal notes and condition updates
- ItemPhoto: images attached to the item

## Item lifecycle

1. Created from a template or from scratch
2. Marked in stock
3. Optionally listed
4. Sold or removed from inventory

## Tracking rules

- The creator of the item is stored on the record and shown in item views
- Profit is based on sold price minus purchase price, fees, and shipping cost
- Estimated resale price is only a suggestion until sold data exists