Both jobs require some work. I did them on my 645. They were very time consuming. The dealer is going to rape you. Find an independent shop that knows BMWs to do the job! I believe BMW quoted me $1K for one valve cover. I'm sure the oil pan would be much more to change.

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11 Audi A5 2.0T 8 Spd Tripotronic w Sport Pkg, 19" Anthracite Wheels
12 VW CC 2.0T [/B] stock
05 VW GTI 1.8 T 5 Spd, Coilovers, Big Brakes,

(Previous rides)
04 BMW 645 CiC Auto
97 VW Jetta Jazz 5 SPD
06 Mazda 6 Grand Sport Auto
05 BMW X5 3.0 6 SPD
05 Infiniti G35 6 SPD
04 Volvo S60 "R" 6 SPD
99 Nissan Maxima 5 SPD
91 Nissan 300ZX 5 SPD
92 Honda Prelude Si Auto
76 Fiat Spyder 124 5 SPD