[Seeeeee]

that is too much to DNA without PR.

The nature of the DNA triggers a PR a lot more often than not.

If not would a 300$ item work for a DNA?

Anything under $499.99 does not require a PR.

I'm pretty sure It's still the case at the time of this post.

So if I DNA someone small like a camera around $400 would it go through as instant refund? or something like a GPU I would make sure its sold and shipped by amazon

You need to make sure it's under 500, tax factored in as well. Also needs to be sold and shipped by Walmart. If it's fresh it might not be instant, but it's highly likely it'll go through eventually.