You might not be getting interest for several reasons; one, as far as I'm aware vieillardii has not been reliably reproduced via seeds in cultivation, and therefore two, going by your being located in New Caledonia our concerns may be that the seeds, if legitimately this species, are wild-collected which is generally frowned upon if not illegal. Three, most of the people on this forum are US or European members, and it's illegal to trade plants or seeds without proper permits internationally. Four, as mentioned above vieillardii is a picky species that needs someone with a lot of experience to grow well.