Hi all. I'm looking for some advice about getting an engine replaced (or possibly repaired?) in a 2009 Audi A4 Quattro.

The timing chain slipped causing significant damage to the original engine (see pictures attached), which had around 90k miles on it and had been maintained regularly. The shop I've taken it to has taken it apart as you see, and are recommending replacing the whole engine with a remanufactured one direct from Audi. Their quoted cost is $8100 for the engine and $3000 for the labor (at a cost of $113/hr). However, a mechanic friend of mine has said that they think that cost is outrageous, as they believe either I should be able to get a remanufactured engine for far less, or that the engine should be able to be repaired instead. The current shop is well-reviewed and I've had work done there before, but it was also possibly overpriced ($1200 for a new starter installed).

I was hoping you all could let me know your thoughts on the situation. Is a replacement engine needed, or should the engine be repairable? What should I expect to pay? Also possibly, where could I purchased a remanufactured engine (a web search hasn't been especially fruitful)?

Also, I definitely recommend replacing your timing chain pre-emptively if you have a chain from prior to 2013. It would have saved me a ton of trouble if I had known

Thanks all! Feel free to ask any questions you need, I'm no expert but I should be able to find the answers.