RE:Bullion banks prepare CME pullback With fewer banks selling gold on Comex, investors are already paying more to maintain their positions. Every few months, investors exchange expiring futures contracts for ones with a later expiration. That would usually cost a couple of dollars an ounce. In recent days it has cost around $10-20.
from reuters article
https://www.reuters.com/article/us-health-coronavirus-gold-cme-exclusive/exclusive-bullion-banks-prepare-cme-pullback-after-virus-snarl-idUSKBN23424L