Has anyone figured out how to implement a sale that's dependent on the quantity ordered? We want to do a '5 for $5 each' sale that would apply only to certain products in one category. We'd like to be able to offer any combination of those products for $5 each if the customer chooses at least 5 of them. I can't see any way to do that with the built in sales routines, and didn't find a plugin that would allow it either. Any suggestions welcome.

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