How much i should price lvl 85 death knight (world of warcraft)?

I finally decided to quit world of warcraft :) My toon is a female blood elf with 525 in mining engineering and cooking, i also have 523 first aid and 466 fishing. i also have the achievement for Lil' Game Hunter with the Hyacinth Macaw which is the only epic companion in the game. The character has an epic neck, helm and belt. Im looking to sell it and see prices ranging from 30 dollars to like 300 so i would appreciate some help. thank you :) oh yeah and it has a Haunted Herring and a pair Ruby Shades. If you dont know, they are both extremely rare and are no longer attainable unless by trade.