need a custom shipping module - here are the spec...

[asareshef]

i need a plugin/component to custom delivery rules.
they may developed even more in the future.

these are the needs:
1. setup different categories with different rates
2. setup different categories with free shipping
3. setup category for free shipping if higher than ## amount
4. checkout will present only one shipping rate - the highest of all items
5. checkout will always present the option for free self pickup
6. in some categories delivery rate will be multiple by the numbers of items from that category.
    for example 3 tables will be $50x3 = $150.
7. must work with rupostel one-page-checkout.
8. must be easy for admin to handle.

i attached a sketch of what i think should back office look like.
http://screencast.com/t/V8T0PcUIYgR

can you do that?
contact me with a quote at asa@d-webs.com.

[GJC Web Design]

by categories I assume you mean VM product cats - what happens when 2 or more items from different cats are in the cart?