Ouch ... I was thinking dash air not Prevost bus air, so not much of what I said is relevant. That is a big number. Tough decision. Not having it will impact your resale though. You might talk to some re-sellers and see what the impact is and add that to your decision.

As far as operation goes, everyone that does not have bus air is running roof tops or cruisair systems while on the road in warmer temperatures.