Few paper records from the House of Worth survive, especially concerning special commissions, so we can only guess at the price Lady Curzon paid for the Peacock Dress.
However, it is said that two thousand francs was not an unusual price for an average Worth evening gown of the time. Depending on how you calculate it, this is equivalent to around US$11,000 today… for an AVERAGE dress! The Peacock Dress have cost much more.
Today the vast amount of labour involved would now command a higher price, especially for my own contribution here in England, where we have minimum wage laws. If the new gown were a commission for a client, I would estimate a price of around $20,000. However, I will have a much better idea of the true cost on completion.