The most expensive of all—Rhodium is priced at $14,500/ounce. It is present within the central honeycomb monolith of a catalytic converter that may sell for up to $250.
Palladium is priced at around $2400/ounce, making it the second most expensive metal present within the central honeycomb monolith of a catalyst. The buyers may offer up to $170.
Priced at $1100/ounce, Platinum may sell for up to $120 with the converter and, along with the other two, sifts the exhausted gases off the harmful emissions.
Thieves steal catalytic converters due to the presence of such expensive and precious metals within their central honeycomb monolith that is then recycled to be sold for scrap.