User defined shipping

[Alex Hayes]

Hello All,

Here is the scenario - a particular user (in this case, one with staff
member privileges) is logged in and upon getting to the shipping page
they want to enter in how much the shipping will be in a free form
text field. I know that this may sound strange but it is what the
customer wants and as such it is what they should get.

I have already implemented a shipping module to allow particular users
to have free shipping, which is very easy, as in I can easily control
who gets to see this shipping module, but problem is how I can get a
text field on the form. I would definitely not like to modify the
Satchmo core.

However with this task I'm unsure if its actually possible because the
form that displays the shipping options, as far as I'm aware, only
presents choices to the user and doesn't allow you to define a form
for your shipping module.

Is this correct? If so any suggestions on how I can make this work?

Thanks
Alex