Loads of those got binned and sold or swapped for very little back during mass import years, same as front bumper protector, no one wanted them or really valued extras like knee rests etc.
It just become the craze and a rarity liked when more standard cars and accessory collection kicked off.
They do look nice though, easy enough for creative types modify a spare grill to a similar concept.
to manufacture the plastics only would be super cheap, I done work via contract to plastic moldings factory here in bangkok that does contracts for honda and toyota parts, they could produce base plastic parts easily but doubt be interested unless an inside contact favour type job. If deal with them again or other likely moulders I will have a word, I got plastics of pod and that all need really as find lights to fit, cut and mod an under light trim to work (can buy them pattern part for n14) and wiring simple enough sort.