How long to code a single-page WP psd?

Guys, how long does it take you to code a typical single-page Wordpress psd (homepage, blog page, portfolio and contact page)? Theoretically it’s supposed to take way less time than coding a multi-page multi-purpose Wordpress theme right? Or is the time frame similar? Would appreciate any ideas…

I depends on your design, sometime it take 1 week or sometime more then 1 month.