Simplify the following text for a Grade 7 native English-speaking person.
Original: In October 1999 , Christie 's auctioned the bulk of Monroe 's effects , including those recovered from Melson 's nephew , netting US $ 13,405,785 .
Simplified: In October 1999 , Christie 's auctioned most of the items , including those recovered from Melson 's family . The action made US $ 13,405,785 .