2018/5/8 · Case advertised the 150 HP as "The World'sPerfectst Traction Engine" and offered 14666 for sale for $3,600, four times the cost of a 1904 Cadillac. Every Case 150 HP built afterward sold for $4,000. In total, according to Hedtke, Case built eight or nine of the behemoths (he indicates nine total, but only lists serial numbers for eight total).