My quick "ball park" answer is between $1,000 - $1,400 / day when everything is factored into the equation...
To elaborate: First, you need to understand that there are three major costs involved in leasing a sleeper coach:
a) the cost of the coach...
b) the cost of the driver...
c) the cost of fuel...
After those three big costs, everything else is rather minor...
If the Driver is not pulling a trailer, his rate is either $200 or $220 / day... (depending on coach level)
If he is pulling a trailer, his rate is then either $225 or $245 / day... (depending on coach level)
In addition, the Driver is paid for three services that usually take place on a weekly basis:
Generator Services (every 100 hours of use): $50 / service...
Weekly Interior Cleanings & Linen Changes: $50 / service...
Exterior Bus Washes: $50 / wash... And additional $15 / wash is charged if pulling a trailer...