Demand

1. Current tastes and fashions

1.1. trends

2. Price of other goods

2.1. Lower/higher

3. Marketing and advertising

3.1. Increased knowledge

4. Seasonal factors

4.1. Holidays

5. Goverment influences

5.1. Taxation

6. Price

6.1. Price elasticity

7. Competition

7.1. Competitors products

8. Income levels

8.1. High/low income

9. Demographic factors

9.1. Population related

10. Competitors actions

10.1. Raising/decreasing price