Individual Price for product attribute

Hi,

I have products that vary in price depending on the size.  So a small would be cheaper than a medium.  The problem is when i go to product attribute under product variant, there is no option to set an individual price for an attribute.

Do i need to do this under as a product variant?  If so, if i have all the sizes as seperate product variants, is it possible to display these variants as a drop down list rather than individual buy it now buttons?

Thanks in advance.

1. Create product attribute (Admin Area > Catalog > Attributes > Product Attributes)
2. Go to product variant details page, then 'Product Variant Attributes' tab
3. Add created product attribute to this product variant (ensure that 'Control Type' is set to 'Dropdown List')
4. Click 'View/Edit value' besides added attribute and add required values (with required 'Price adjustment')

Thanks, is it not possible to set a different price for different groups.

Lets say i have an item of clothing.

Small size costs
   retail group - 11.50
   trade group - 4.50

medium size costs
  retail group - 11.50
  trade group - 4.99

etc.

Is this possible?

It's possible for the base product price, but not for product attributes. Go to Admin area > Product variant details page > 'Prices By Customer Roles' tab

Possible feature for a future release.

More features for product attributes - including pricing for different groups.