Based on the information provided, we can derive the following pricing structure for the configurable Fiat weight options:
1. Base version (220kg): £700
2. Base version + 2 additional weights (300kg): £800
3. Base version + 4 additional weights (380kg): £900
4. Base version + 6 additional weights (460kg): £1000
Each additional weight seems to have a fixed cost associated with it, as the price increment is consistent across the options. The incremental cost of adding weights can be calculated as follows:
1. 300kg weight (2 additional weights): £800 - £700 = £100
2. 380kg weight (4 additional weights): £900 - £700 = £200
3. 460kg weight (6 additional weights): £1000 - £700 = £300
Therefore, each additional weight increment corresponds to an increase in cost of £100, irrespective of the base weight option selected.