Do you need the original box if you're trading in a camera?

They have an online trade-in value app on the website. I don't recall anything about having original box, but you can fill it out to see.

I would think you should have the receipt , the box , and all parts - I believe they will check it - but you could ask them- there should be live chat on their website

For the most part, yes. But, they may make an exception. Not sure.