Customer To Set Price In Price Field

Hi,

Some of my products will be sold as a gift/present where the customer/buyer can determine/set his own price. For example: he wants to buy a bottle of wine for 20 euro, but does not know which one. So he should be able to fill the price with 20 euro and pay that price.

How can I make a blank price field to be filled in instead of the price already showing?

Edit:

Found it already! It is in the zero price settings where the product is added/edited.