How much do you pay for ENS?

I'm curious to understand the market dynamics surrounding Ethereum Name Service (ENS). Could you elaborate on the typical pricing range for ENS domains? Are there any factors that significantly influence the cost, such as domain length, popularity, or demand? Furthermore, how do investors typically approach purchasing ENS domains? Is it a speculative investment, or do they often have a specific use case in mind? Understanding the economics behind ENS could provide valuable insights for those interested in this emerging crypto-naming system.