I'm fairly sure I had the same done this year as an incidental finding. And wow, Rick's right on target, except I had it done at a dealer! On my invoice, the price per unit for DCT fluid and 75/90 gear oil were nearly exactly half of your per unit price; used 9 and 5 units, respectively. The total was around $4800. I really need to smooch my dealer the next time I'm there.