Yeah - that's typical dealer pricing. Figure $150-200/hr for labour, and anything they do (even as simple as changing the battery, they'll charge you for an hour).
$3000 price is definitely the timing belt. It's an involved process, but that side of the engine is just the standard 1.4T engine that VW used in a lot of cars, so any competent VW shop should be able to do it for probably half that price.
I do all of my own work, so those prices don't put me off; it's a great car, and yes - there are things that can go wrong and break, but that's true with any car. Standard maintenance is not egregiously overpriced - the DSG transmission fluid flush being the exception, but that's not e-tron/Audi, but rather typical price for any VWAG product with the DSG.
(The fluid and filter can be had for $100; I can do the fluid change in my driveway in a little over an hour - always shocks me that the dealer price is so over-the-top on that one. OE DSG fluid is charged at $35/L and requires 5-6L, so that explains some, but how they can't knock this out in an hour worth
Monkey Oil Change Price of labour is beyond me.)