This file defines reputation modification to store prices.
The first row indicates the player's reputation.
The second row indicates the percentage of the item's base price to charge.
In IWD TotL we have:

2DA V1.0
1000
       1      2      3      4      5      6      7      8      9      10     11     12     13     14     15     16     17     18     19     20
1      1000   1000   200    150    140    130    120    120    110    100    100    100    100    100    95     90     85     80     75     70