Sending by Correos (mail service).
Bank transfer or Paypal.
Secondhand minerals sale
Bocamina.es's shop only puts in sale specimens of own minerals or of third persons who like that request it from discarded cards of collections, duplicated and / or extracted by the collector.
There will never be sold minerals from professional sellers, only of individuals.
Any specimen put up for auction on e-rocks.com will not be any more proposed has the sale here.