Vellsencraft Ltd.
When Drift travel caused the thasteron market to crash, some mining conglomerates sought new uses for thasteron that would sustain some of the diminishing demand. One of the more successful ideas was the Vellsencraft Ltd. thasteron-fueled augmentations, spurring the thasteron-punk subculture that embraces the antiquated aesthetic. This modification is limited to arm, hand, leg, foot, and spinal column cybernetics. The augmentations appear to be made of copper, brass, wood, and leather, featuring tiny fueling ports and gas vents, and the faint exhaust gives you a –2 penalty to Disguise and Stealth checks except in environments where the smell would be innocuous, at the GM’s discretion. Vellsencraft augmentations cost 20% less than usual, but they consume 100 credits’ worth of thasphalt to keep functioning.
Source
Drift Crisis pg. 117
Augmentation Effect
if and [or [{augmentation.systems contains 'arm'}, {augmentation.systems contains 'all arms'}, {augmentation.systems contains 'foot'}, {augmentation.systems contains 'all feet'}, {augmentation.systems contains 'hand'}, {augmentation.systems contains 'all hands'}, {augmentation.systems contains 'leg'}, {augmentation.systems contains 'all legs'}, {augmentation.systems contains 'spinal column'}], {augmentation.type == 'cybernetic'}] then set item.price to (item.price - (item.price / 5));