I noticed there is no size limit for a shamanic lodge, other than the minimum of 3 meters by 3 meters. So a lodge could be as big as the shaman has space to set it up.
It makes sense from a cost standpoint to use a lodge as an astral barrier and in place of a ward. A lodge acts as an astral barrier and about everything that a ward does, only the lodge does not expire like the ward does. The rating (force) of a lodge can be increased over time, too. So a staff shaman could be told to go work on the lodge when there is no other activity to keep him busy. The shaman would need to follow the same totem of course and the location of the facility would need to be in the totem's domain, but that could all be addressed when hiring the shaman, or contracting for one to come erect a lodge.
Which leads to another possibility, shamen erecting multiple lodges for many customers. The cost for even a high rating lodge should remain linear because any shaman of that tradition could be called in to increase the rating. It is as easy to erect a rating 6 lodge as it is to increase a lodge's rating from 6 to 12. And the materials cost the same.
Should we see more corporations shielding their entire facility with high rating astral barriers in the form of shamanic lodges? It would cost 3000 + the cost of the shaman and less than a week to have a rating 6 astral barrier, and the sky is the limit. I could realistically see corps hiring a shaman for a month, paying 15,000 for materials and getting a rating 30 astral barrier around their entire facility. It might make even more sense to get a small team of shamen so that they each are aware of any breaches.