I haven'thad any issues with mine, the majority of my work is pretty hard on a truck and gearbox so it's definitely proven itself. Absolutely love it and wouldn't consider anything else by a long shot!
New transmission cost $12000. I have replaced mine at 496 000 miles. It was under warranty but at the dealer told me price is 12k
12000 sounds like a lot but for a 5 year 750000 mile warranty the amount of Revenue you better be making in that amount of time it's a drop in the bucket
According to the Volvo dealer rubin harness inside the transmission was bad . It was cutting off the power