Extraordinary Trapsmith

(Races of the Dragon, page 100, DnD 3.5)

[General]

You are an expert at constructing mechanical traps.

Prerequisite

Craft (trapmaking) 9 ranks

Benefit

When you determine the cost of raw materials and the time required to create a mechanical trap, reduce the base price by 25%.

Special

A kobold who selects this feat can instead reduce the base price by 50% for determining raw materials and time required to create a mechanical trap.