What Does the Kingdom Cost?

Thought this was so cool, over at Arlens Blog that Id post i here too. What Does the Kingdom Cost?:

From a homily of St. Gregory the Great (bold emphasis mine): "The real value of that is beyond price, but for you the price is just what you possess. For Zacchaeus it was worth half his fortune, since he kept the other half to restore fourfold whatever he had unjustly extorted. For Peter and Andrew it was worth the value of their nets and boat; for the widow it cost two small coins; another may buy it with a cup of cold water. As I said, the kingdom of God costs whatever you have."