Place in influence use for retro worlds

Per wiki descriptions and findings, these was the possible benefits of having influence:

• Buying silk - in modern rsc was 3 gp unless you tried to haggle with him, making it 2gp. For here could enable the haggle if player has above some influence.
• Selling fur - in modern rsc went to 12 gp. Page mentioned Jan 2001 update increased raised the price however no confirmation. Baraek's modern dialogue, however, gives option to haggle with him when buying from 20 to 18 gp, so this one would also fit.