Everything is for sale

The panels as you can see are lightened, things like threaded rod and knobs could easily be sourced at your end, as could the white plumbing pipe which acts to hide the threaded rods and provides the correct spacing so it would be just the MDF, ply or whatever other material you would choose.

Shipping to Chile could be a problem, not sure of the weight of one unit (just wood) but you would need a box 1100mm long x 600mm wide by say 150mm deep to fit three stands........

marcs