California Cremation Costs. The average cost of cremation is a fraction of funeral and burial costs in California, less than a quarter of the $10,000+ cost of an average funeral and burial.With cremation, there is no need to embalm or to purchase a cemetery plot, casket, burial vault, or gravestone.alifornia Cremation Costs. The average cost of cremation is a fraction of funeral and burial costs in California, less than a quarter of the $10,000+ cost of an average funeral and burial.