Ask for an immersive room and you will usually be quoted for equipment. Equipment is the part everyone can price. It is also the part that matters least.
A projector is a component. It has a brightness figure, a lens option and a price, and two suppliers quoting the same model are selling the same thing. Nothing about that number tells you whether the evening will work.
What sits between the box and the evening
Between a delivered projector and a room that does something, there is: a survey of the actual space; a decision about which surfaces carry what; content built to those exact geometries; the alignment and warping that makes light land where it should; the control system your staff will use; the fit-out that hides all of it; and the support that keeps it running after the opening night.
Each of those is a trade. The traditional way to buy them is separately: an AV integrator, a content studio, a fit-out contractor, and whoever is left holding support.
The seam is where projects fail
Four suppliers is four contracts and three seams. The content studio designs for a surface the integrator has not mounted yet. The integrator installs to a drawing the fit-out has since changed. When something does not line up on the night, everyone can point somewhere else and be technically correct.
We are not claiming the individual firms are the problem. The good ones are very good. The problem is that nobody owns the result. The venue does, by default, at exactly the moment it has the least ability to fix anything.
What we do instead
We do the survey, the plan, the installation and the calibration, and one company answers for all four. When a surface moves, the plan moves with it, and when a picture does not line up on the night, there is no argument about whose it is.
That is the entire argument. Not that we buy better projectors (we buy the same ones anyone can), but that the equipment is a small item inside something that has to hold together as one thing.
What that means for a quote
It means a specification is worth more than a price list, and that we would rather survey a room before naming a figure. A number produced without seeing the space is a guess dressed as an offer, and revising it upwards later is the oldest trick in this industry.
If you have a room in mind, the useful first step is a conversation about the room and how it is used, not about lumens.