Providing replacement printing fluid to a printer

A tangible storage media including a machine-readable program code, the program code to cause a computer to:

• receive a cumulative consumption value for a printing fluid corresponding to a supply from a printer;
• calculate a plurality of variable values by way of the cumulative consumption value for the printing fluid, a statistically derived depletion quantity for the printing fluid, and an estimated time to ship a supply of replacement printing fluid to the printer to form calculated variable values;
• and
• cause the supply of replacement printing fluid to be shipped to the printer in accordance with the calculating including transmitting an instruction from the computer to a supplier entity.