There are going to be many factors which guided Peco's pricing of the Bullhead track, many of which for most of those outside of manufacturing and this market sector, will find a little hard to grasp. Off the top of my head some of the factors may be; higher, in real terms, research, development, and manufacturing setup costs; different design requiring differing manufacturing processes which may be more costly; smaller potential market meaning lower overall sales, so less return to reinvest in new products, unless sold at a higher price.
I think many on RMweb will have seen similar posts complaining about the differing price between product X and product Y, with the complaining poster failing to understand that there are many and valid reasons why the difference exists. The basic answer to the question why one item might cost more than a seemingly similar one is "because it just does!" It's a fact of life and as a customer you can accept it and purchase the product or just walk away.