I wonder what the costs are to build an airship to the same scale as a commercial airliner. If speed was not a factor and it seated comparable amount of people,

I wonder what the costs are to build an airship to the same scale as a commercial airliner. If speed was not a factor and it seated comparable amount of people, but it cost significantly less to build and operated there could be a niche market for the not-in-a-hurry air traveler.