Did even better this year than last. Was able to secure upriver lodge with the subsiduary of Flycatcher tours for $42/day/pp (trasnport there/back/around while there, lodging 3 meals/day, tour guide for me and friend) at the Renaco lodge for 6 days. Last year I paid $52/day (although I booked alone, the cabin was still double occupancy.)
http://www.myamazontours.com/