Dear All,
As a part of my research, I have a conjoint question as shown below:

In place of radio button (the circle) I want a button saying “purchase” and for the last option “I prefer not to purchase any option within this collection.” I want a button saying “no purchase”. I do not want the radio button to show up at all. How can I make that happen ?
An example of what is I am trying to achieve is:

Any help would be appreciated. Thanks.