Step 2: ...With less experienced players, swapping an expensive property (e.g. green) for their cheap one (e.g. orange) to give you both a full set is an easy s

Step 2: ...With less experienced players, swapping an expensive property (e.g. green) for their cheap one (e.g. orange) to give you both a full set is an easy sell, but they end up with the "poisoned" set: something that's too expensive for them to develop with their current resources...