The possible values are:
- Standard price,
- Updated standard price
- 'Budget price',
- 'Simulated price',
- 'Last price': this value corresponds to the price of the last movement,
- 'Average Cost',
- 'Last price of purchase': this value corresponds to the last receipt price or last invoice,
- 'Price list': The material is valued from a price list of the type priority supplier/product.