Hello,
Kindly, find below our comments.
Can we select a base option ie. 120gb hard drive from our product range and then have upgrades which auto adjust the price without having to over ride prices not to include the cost of base option?
We can offer you to use options functionality for this. You create a product, for example, a computer and add options to it, like 120gb, 160 gb hard drives, etc and set different prices for these options. Then when selecting an option the price of an option will be added to the basic price of the product. You can add options to each product or to a product type. Please, refer to this page to know more about setting options:
http://www.viart.com/online_store_product_options.html
The each option section is displayed in a row, how can i get them to be displayed as a list vertically?
Please, go to:
http://www.viart.com/php-shopping-cart-demo/admin/admin_property.php?category_id=0&item_id=80&property_id=4 (the login is 'admin' and the password is 'admin') to see how we managed the formatting of options you need. You can do the same for yourself.
With regards,
ViArt Support Team