iFone Arcade

Hello, I'm planning on listing my unlocked Iphone 8gb on ebay soon. I still have all original accessories as well as a plastic case and a rubber case, 3 screen protectors, and apples world-travel kit adapters. I will be listing all of these on ebay quite soon. Everything is in prestine 100% excellent condition. What would be a reasonable amount to accept, and do you have any other tips for my listing on ebay?

ebay list the for about 300 _ 380