Such a tool helps focus discussions. The goals hierarchy that you can expand and collapse is invaluable. Logical Decisions offers the most sophisticated tools for preference assessment. You also get graphical and point and click tools to adjust weights. The availability of the trade-off method is a feature where the software infers relative preferences from the choices you make between pairs of alternatives.
Any problem has uncertainty associated with it.
On the other hand, if you can guess a likely high and likely low resale cost, Logical Decisions will let you assign certain weights to those uncertainties and work through it. The advantage will really come when you are trying to combine several aspects that have probabilities. You don't know what the resale value is, you don't know what the stopping distance is, etc. Now you can combine those and take a look at what the total uncertainty is. Handles an unlimited number of alternatives, evaluation methods and goals.