A number, not a guess.
You send the brief. We model it, slice it, and read the real machine time and material off the slicer. The number you get back is that, not an estimate built on a hunch.
Standard work runs about two weeks from a confirmed brief. Oversize and large-format commissions run two to three, and any outside machine time is billed through at cost.
Big single prints carry real risk: a failure at hour sixty is a restart, not a repair. That risk is priced into the commission up front rather than discovered halfway through it.