Money Button Demo
This page has two Money Buttons. The first one has an editable payment area:
The second button is not editable, and it hopes to receive USD. It should be noted, that Money Button has an internal currency converter, so if the user wants to primarily pay with for example Euros, then the amount shown in the button is not necessarily exactly 3 cents.
Please view the source code of this page to see how this thing works. The Textpattern plugin kuo_money_button created these two buttons. For example the first button is made with this tag:
<txp:kuo_money_button amount="1" currency="EUR" to="kuopassa@moneybutton.com" type="buy" label="Ding, dong" editable="true" />