Greg:
The two-day C&TS photo freight cost $448, which included overnight accommodation in Antonito and two lunches (each day at Osier). The D&S cost $258; I assume that included lunch. The two trips as a package cost $629. There was a discount if you booked early ($35 for one trip; $100 if you did both).
I rode the CT&S trip, but I'm not sure how many there were of us altogether. Fifty? Sixty? Maybe someone else who was there could comment.
Jim