Apple Inc is expected to blast further past the $1,000 price barrier when it launches new iPhones on Wednesday, but Wall Street is most intrigued by how deep into its larger-than-ever lineup prices hikes may go.

Apple’s market capitalization has passed $1 trillion and the company needs to sustain revenue growth from its signature product even as global demand for smart phones plateaus. One way to do that is to get people to buy more expensive phones.