The comment I replied to say "priced have doubled for 2016", but there were no iMacs released in 2016. The latest iMac is from October 2015. So the only way to compare prices for 2016 models is MacBooks. There is no valid comparison between a brand new Windows desktop vs a brand new Mac desktop because there is no new brand new Mac desktop. The Mac Pro workstation hasn't been updated since 2013, and the Mac Mini hasn't been updated since 2014.
There are no valid comparisons between the prices of a modern Windows desktop and a modern Mac desktop because there is no modern Mac desktop.
Apple's workstation and gaming machine offerings are widely acknowledged to be significantly under-powered and over-priced.