Cost issue - cables is pennies per foot, the adapters to make it look nice on the wall is a couple of bucks.. Running the wire a few hours of time if your so inclined. Even if you hire someone.. I can pretty much bet you can find someone for less that the cost of the adapter to run a wire.
The pce-ac68 I bought to play with is http://www.newegg.co...N82E16833320173 $97 at newegg
How many drops you need 1 - pretty sure you can get a drop for $100. Now the property value just went up.. How is an email to your landlord, hey going to run cat 6 between rooms. No cost to you - your property value went up, your welcome!
If your that set on wireless which will not be the speed you think its going to be All the numbers are hype and marketing - When my card shows 1300 the connected data rate, guess what its not close to that I see 500, but on my wire I see 900..