I'm using Drupal commerce kickstart. I installed Commerce sale price to manage the discounts for specific products. This is a great module, the only bad thing is that this module actually creates another price to link to products. So if I use the filter price, this one will filter either regular price or sale price, but never both together.
I know that I can create discounts with rules, but I would like to find something simple, that can be set up easily when the customer creates a product.
How would you fix this issue ?