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 would have cost much more.
Today the vast amount of labour involved would command a higher price, considering modern minimum wage laws. The House of Worth was a pioneer in setting standards for ethical treatment of staff, but these innovations came some time after the Peacock Dress was made.