From ToEE

The Money Changer in Hommlet provides the following services:

• Conversion of coinage (eg, copper into gold pieces) at only 10% of the total value of the coins.

• Purchase and sale of precious metals in forms other than coinage (eg, gold ingots).

• Purchase and sale of jewelry.

• Purchase and sale of gems.

• Crafting of jewelry to order, although it will take some time for the jewelry to be made. This can be done from raw materials (gems and metal) that you provide.

• Safe-keeping of valuables. A charge of 1% of the total value of items held is applied per week for this service. Charges are calculated and charged weekly.