What is the interest level in an addon to add shipping options to an order. I.e.
Return receipt + $5.00
Surcharge: 8%
etc.
The options would be method specific and the first implementation would deal with unconditional options. Eg. No support for “if shipping charge is greater than $25 deduct $3” but “add return receipt ($5.00)” would be supported in 1st release.
If you have specific requirements, please post them here. If there is enough interest I will look into doing an addon for it.