I certainly don’t know of any agents that actually ‘state their commission’ amount to clients. Agent’s commissions are already built into the price that the client pays. Whether that be a pre-negotiated commission rate with a developer for new-build or a percentage agreed with the vendor for a re-sale. People need to remember that the good agents in Spain earn their commission by marketing the properties on behalf of the private vendors and developers. Be it through advertising, exhibitions abroad or simply hard work on the telephone/computer.
Just my two cents..