Well now, its true, some Audi spares are relatively expensive and some are outrageously expensive. Also true is there is often a supply issue, (not in stock) and despite clicking the (let me know when in stock) link, no stock remains the default situation.
I am told by an reliable Audi main dealer that Audi are not the best at releasing parts specifications for aftermarket suppliers.
As an Audi owner who won't buy any other manufacturer it is very frustrating.
Recently replaced my complete clutch including dual mass flywheel, in my A6 C7 Avant 2016 reg, with gritted teeth off i went to my local main dealer who kindly gave me aprx 10% discount. All directly supplied parts were LUK.
But wow, Audi don't make it easy for owners to do their own repairs. Mammoth task to even take the gearbox out.
Quotes for the job errrrrrrrrr yes. But a few said (no we can't do) others only offering an estimate with (can't give an exact quote) dealer saying its a two day job.
So, overalls on, i got on with it. Time not an issue being retired and not needing the car every day, (bus pass at the ready) Impromised " the special tools" needed.
Job done.