"There are several definitions that explain what a mite was in relation to other money systems. The King James version of the Bible, being English, interpreted the original Greek word lepton as mite, or as commonly reported, a 1/4 penny or half a farthing. The general consensus is it was a very small amount, almost nothing and was usually mixed in with other valuable coins."
The widow and her 2 mites made a huge impression on the Lord so much that it was put in the word of God as a memorial forever. For the complete post see How Much Does A Penny Cost
God Bless,
Joseph J Young
joe@josephjyoung.com