Much has to do with royalty payments and the like. Contracts are renegotiated on a season by season basis and in a case like West Wing they might have to pay Rob Lowe a percentage of the package even for the seasons that he did not appear in if they boxed them together. Not to mention producers...
I've done a one of these for an ad agency I worked for although we spent about $300K on a large room and projection system. A commercial install is completely different than a home install. Without a budget to work from you are shooting totally in the dark. You may want to present 3 proposals...
Well, My good ole VPL-W400Q, that I purchased at the advice of this forum back in 1998, is finally looking unacceptable and I need to replace it. It needs a new lamp and new blue plate which gets me 50%+ to a new low end projector. Money in the family is pretty tight for luxury goods right...
I got my bundle cable from a company called TecNec http://tecnec.comwho supplies broadcast video cable. Because of my braodcast connections I was able to get a really good price (At the time I bought cable litterally by the mile). TecNec has very high quality cable that is well shielded for use...
Oh you are going to have so much fun. I did this about 5 years ago and have learned a lot. Mostly from the mistakes I made. One of the best things I did was to install a routing closet. All AV in the house runs to one central location. In my case a 4x4' room. All Telco, Cable and internet...