024d8488_ational_Cooperative_Law_Center__Cooperatives
[0] Cost [Condominiums] Higher-maintenance charge for Co-op is similar to an HOA charge for Condo which includes salaries and property maintenance, real estate taxes are paid based on each individual unit which are apprised separately from the building. [Cooperatives] 
Lower-typically less expensive per square foot, the cooperative pays the real estate taxes, mortgage of the building, salaries and maintenance; split the amount among the owners in relation to each share.
Comparison of Housing Cooperatives to Condominiums | National Cooperative Law Center
Cooperatives