Quote a sell sheet anywhere else and you are paying for two things: photography and layout. The market rate for sell sheet design runs $500 to $2,000, and print collateral generally sits between $300 and $2,000 a piece. Most of that spread is not the designer. It is the cost of getting a usable picture of the product in the first place.
When the product is already built in 3D, that half of the invoice is gone. Every angle the layout could want either exists or is a camera move away, at any resolution print needs, on any background, with no shoot to schedule and no sample to ship. The layout is the only work left, so the layout is the only thing you pay for.
Which is the honest case for buying print here, and the honest limit on it. Your local printer will lay out a sheet for very little, sometimes for nothing with the print order, and for a piece that is mostly type they are the right call. What they cannot do is produce the product imagery, and the studios that can build your renders and shoot your video usually stop before print. Running both off one set of source files is the whole advantage, and it is why the product in the catalog is the same color as the product in the video.