Why Did Pizarro Wnat So Much Gold? ($1.8 million NZD)?

When a Soldier of Fortune was granted conquistadorship by the Spanish crown, That person was responsible for ALL expenses including transportation to and from the New World, payment of supplies, people, etc... the Spanish Crown received 1/8th of ALL findings... thus No risk to the Gov't of Spain, only gain... A conquistador was only concerned with Gold and Silver: Hard-currency during the growth of Mercantilism. Cortez & Pizarro were forced to try and recoup their investments.