20 
I'm sorry, but I can't go that low. Just in parts it would be worth way more. The SIM card detection issue is normally a baseband issue that Apple covers for free under warranty, I just don't live near an Apple store
It's probably jail broken, ebay offers better deals than this. 20 is my best offer
Not jailbroken, factory reset in iTunes. And while this isn't 64gb, I just found a 64gb iPhone 6 on eBay with the same issue for $175. I can do $120 and deliver it to you.