How to have product cost manually inputted when using Purchase Order field

I like the Purchase order option but I would like to enter the cost of the item because it varies. Is that possible?

Thank you for contacting us. I also recommend creating an account in JotForm so we can better assist you with your requirements.

You can use this link https://www.jotform.com/signup to create an account using your email account. I suggest you used the same email account you used already so that your Guest only account forms will be automatically move to your registered/created JotForm account.

As to your question, you can achieve this by using custom payment form + Purchase Order payment integration.

Here is an example form you can test https://www.jotform.com/73036441720953

I hope this help. Let us know if you need further assistance.