How much should I charge to sell my iPhone 6 Plus?

I have an iPhone 6 Plus that I want to sell so I can upgrade to a different device. I have tons of accessories and the original box that I will gladly sell with it. My techy friend said no less than $500 but another friend told me $300. How much would you pay for the 6 Plus + the bundle including 3 cases, 2 30-pin to Lightning adapters, original box, a phone stand, wall charger and Lightning cable?

Can you choose which iPhone update you want?

Ok so I have a iPhone 6 and I only have 16gb and sadly I can't even really use all of them but I'm trying to conserve space and the new update 9.3 is out and I really don't want it so I was wondering if I don't get it and install will I still be able to download the next update 9.4?

Parent Stealing money from their children?

I'm 15 years old. I have been doing little online businesses for 2 years. All money is gone through Paypal then to the Bank account which is suppose to be under my name (but my dad put it under his and lied to me). I have been working many long hours in the night and many months of work to earn my money online. What I do is completely legal just coding software and selling it. But I made $2500 which I had in my paypal. He kept bugging me to move it to the bank account. So after I moved it to the bank account a few days later, he comes up to me saying that he needs to pay rent so he takes it all and uses it. He said that he would pay it back with interest and nothing has happen it's been about 5 months since he has taken it. He won't bring it up… He has purchased very expensive things like a new iPhone 5 and $300 speakers and more… But he can't pay me my money back… I live in California I've heard there's some law to protect against this thing. But is there any way I can get it back? My parents are divorced.

I found an iphone on the floor? What do I do with it?

I don't want to be accused of stealing (theft by finding). I took it home and used it for awhile after i broke the sim card. I can't return it to a police station because i'm a child and i can't tell my parents (don't ask why). Also, I'm only allowed to travel stricly to and from school, no where else. I found the phone on the sidewalk when i was walking to school. Its an iphone 5 gray. How do I get rid of this thing, because i know that its not mine I don't want it anymore. Also, I can't call the owner. I just want this out of my hands.

Added (1). Should I turn it into my school

Apple-FBI issue With or against Apple?

As we heard few weeks ago that Apple has refused to break the password of an Iphone a criminal had, to protect the privacy of the users, anyway FBI considered this as an obstruction of justice.
Today I heard that the FBI has broke the security of the Iphone on its own.
With or Against the action of "Apple" company by refusing the orders of FBI?