Need of new Modules

Hi

I would like to add the following feature onto a complete new website

1. online shop with ability for credit/debit card payment

2. auction area (like ebay or trademe.co.nz)

3. employment  (like seek.co.nz)

4. verified member - where server generates key which is posted out, this is then entered by member to verify address

The above will be intergrated into the standard Dolphin site with some changes.

Members will need to be able to enter the education institutes and workplace where they have studied or worked and they can be searched using these criteria

Please advice indicative costs.

Thanks