Well for one i can't safely drive the car with the standard floors and I don't have a trailer nor a car with a tow bar. So getting the floors made whether by Arch or a third party is a necessity
I ran out of time to call them today, re availability and pricing but as said it feels like I'm messing around a fabricator who quoted a very fair price and is trying to grow his business.
I don't mind spannering on my own car, it's part of the ownership experience for me with a car like this. But I accept that people either don't have the skills nor the inclination to Scrabble around and fit their own floors. Everything is easier if you just pay someone else to do it :)