According to TMZ.... Lamar Odom spent a fortune -- $75,000 -- at Love Ranch South in just over 3 days.
Sources at the Ranch tell us, Ranch employees picked Lamar up and chauffeured him from his Vegas home to the ranch, 70 miles away.
When Odom got there he faced a lineup ... consisting of the working girls from which he had the pick of the litter.
He chose 2 girls who were at his beck and call the entire stay.
Lamar had the VIP suite and with room, board and girls ... the total was $75k.