Does it cost more for everyone involved to wholeheartedly agree with a solution?
Not usually. It’s simply a matter of changing your perspective so a solution that can truly satisfy the people involved can come to mind. In many cases it can wind up costing less. This is because it often takes much less time and energy to reach a solution that people truly agree with compared with the time and energy required to create conventional solutions. Also, since everyone is truly in agreement with the decision or solution, you don’t have the costs that occur when people aren’t truly in agreement.