How are digital signatures reducing the cost of signing contracts?

First, because digital signatures can be completed electronically, they eliminate the need for the signer to physically travel to the location where the contract is being signed. This can save time and money, especially for contracts that require multiple signatures from people who are located in different areas. 

Additionally, because digital signatures can be completed quickly and easily, they can help to speed up the contract signing process, reducing the amount of time and labor that is required.