The price of rare plants are based on customer demand, the ability of the grower to grow it without imperfections, ease of propagation, and the speed at which it grows.
Rare plants are rare and expensive because they take a long time to grow, are slow to propagate and there may be some additional challenges to grow them.
Anyone can keep a rare plant alive, just make sure you know its natural growing conditions and replicate them as closely as possible.
