I too think they tend to look ugly when tacked on to an existing house. Perhaps in future when they are an integral part of the design of a house they will be more acceptable. I certainly don't think you would recoup the outlay unless you are willing to wait quite a few years.
Vision Disturbances: "Aura" Without Headache?
Tickets to the RSC and a night at Hotel du Vin Stratford-upon-Avon
And I have regular updates! 

