It's a matter of perspective. As insurance then not worth a fig. But if it means a sale goes through, worth a tray of figs.Am I correct in thinking that indemnity insurance is really not worth the paper it's written on? It does not cover you if the work is shoddy and falls down or needs expensive remedial work. It is merely for legal costs should the council discover this is not a legal build. Then you'll have to knock it down anyway at your expense.
But I am surprised how these policies can actually be sold, they seem like fraud for the obscure amount of risk they supposedly protect against.