Re: How do I offer a discount?
It's best to restrict your posts to one question only - it will be easier to help you that way.
For return policy, go to admin->tools->define pages editor->define_shippinginfo.php.
For discounting, try using admin->catalog->products price manager. It doesn't work exactly like you want (5 bottles for $20) but it does allow you to define quantity discounts on a per product basis.
Scott C Wilson, That Software Guy, Plugin Moderator
Contributions: Quantity Discounts, Better Together, SMS on Sale, Gift Wrap at Checkout, and more.