No document gives a running cost for the OP. What the rulebook commits the City to is venues for at least 100 people, transport (one vehicle per sub-prefecture to fetch councillors), an executive secretary, a coordinator per region and theme, training seminars and the attendance of secretaries when summoned; the staff cost the sources describe is the evenings of the credentialing teams at 21 to 23 assemblies a year (by 1997 the City was considering overtime pay to keep them) and the departmental hours to analyse and execute hundreds of demands a year. The heaviest cost is unpaid. Councillors met weekly, sometimes twice a week, in the 1990s and fortnightly since; in 2006 a survey of councillors found 40 percent giving four to eight hours a week and 21 percent more than twelve; delegates meet every two weeks and sit on works commissions; 59 percent of participants in 2005 were people whose time was their capital (self-employed, retired, homemakers, unemployed). For a person on a minimum wage the World Bank priced eight hours a week at R$ 58 a month in 2007 terms, a sixth of household income, which is why the very poor are rarely councillors. The political cost is visible in 2002 to 2004, when unexecuted works contributed to the Workers' Party's defeat, and in 2017, when the mayor chose a suspension rather than promise what he could not pay. The surrendered model is the planning office's: the budget function was taken from the planning secretariat and put in the mayor's cabinet in 1990, and engineers had to learn to argue with residents in plain language.