paid cart option for a paper invoice

[ESFHNteam]

Hi,

Because of some of our business clients wants a paper invoice I'd like to add an option in the cart so clients can select wheter they want that. But is somebody wants this I'd like to charge for example $ 1 for that.
How can I get this done?

Thanks in advanced and Happy Christmas to all

[bytelord]

Hello,

You could create a shopper field for that, but for the option you want to charge him with 1$ then you could make a product for that and when someone add's this option add that product id to the cart .... you could find some examples for that (http://forum.virtuemart.net/index.php?topic=94539.0;topicseen).
Otherwise you could create a plugin for that ...

Regards