1. PHP 5.* and register_globals = Off , MySQL [url removed, login to view]
2. Shopping cart system for B2C
3. SQL Injection protect
4. easy to customize and change whole theme
5. support multi domain name(one domain use one database)
6. administrator can pickup(from database) and compose a products package to sale in a time period
7. Please show us which payment gateway and shipping method used ?
8. customize payment gateway and shipping method
9. use public product options(size, color and for different price..)
10. unlimited categories or static categories ?
11. administrators with configurable permissions or not ?
12. multi languages support or not ?
13. PHP don't use class method
14. Theme don't use smarty or any template engine
15. SEO support for each html page(different title, keyword and description)
15. Please show us a demo , features and fee
osCommerce is not a best choice, it's register_globals have to set off.