Add to the subrule “Office”:

As a weekday action, an employee may advertise the company by performing the following atomic action:
* Roll 1DICEX, where X is the company budget divided by 5. The result of this roll plus 100 is known as the advertisement’s Expense.
* Roll 1DICEY, where Y is the company budget divided by 5. The result of this roll plus [20 times the number of boxes in the warehouse] is the advertisement’s Effectiveness.
* If the advertisement’s Effectiveness is higher than it’s Expense, then the Employee who took the advertising action may immediately sell a box, then once again advertise, regardless of if those actions would otherwise be legal. This is known as a selling streak. Actions taken as part of a selling streak do not add productivity or options.
*If the advertisement’s Expense is higher than its Effectiveness, then decrease the company budget by the Expense.