This was covered recently but the search function isn't finding it.
I had both my front and rear screens replaced by Autoglass after an accident at work. They replaced like for like, ie. gradient band front.
Both screens were replacements and not Audi, not that I see this as being an issue, personally.
They were quick, reasonably tidy and there was no real signs that they were there, except that when the tailgate was shut, there was still a few grains of broken glass rattling about inside.
Oh, and I got a new tax disc holder, when you needed a tax disc holder...!