For a couple of hundred less you can get for example Mivv Suono set which looks about the same and is TÜV and E-approved. It comes in stainless, titanium and carbon, from 700 to 1000 euro. Still a lot of money for a pipe. My main concern is the weight and the heat generation of the stock mufflers. Around here aftermarket pipes are generally disregarded in the bikes value when you decide to sell it, you could be better off changing the stock mufflers back on and selling the aftermarket ones separately.
However I'll never gonna shed over a thousand for a pair of mufflers as a litre of gas costs 1,6€ here and for that thousand you can get so much stuff and other farkles which make a lot more difference how the bike handles and feels.