The LK 25 kill alone is sold for 25k or more. The average 10m LK kill is 15k from most sellers. To get you the Shadowmourne questline done, and still be able to do Heroic LK, we'd have to do Heroic Sindragosa, which will cost you quite a bit more. Our LK 25 sales have averaged 40k so far alone (for normal). Since LK 25 will ONLY be done on Heroic from now on, you can expect this price to have doubled.
From a general estimation, you're looking at 80k or more for both.