Is there an extension which would allow for a special price to be set at each quantity tier?
For example, I would like our pricing to be shown like this on the front end.
|Sale Ends 12/15/2016|
A special price would be entered for each tier.
I believe the Product Price Formula extension can help to achieve what you need: https://www.itoris.com/magento-product-price-formula.html
It allows creating a math formula for the final price. So you can create your custom tier pricing based on the quantity, custom options, and product attributes.
Hope this helps!
Best regards, Alex