Smart Coupons for WooCommerce

Allow us to set the promotional product price granted by coupon, rather than discounted amount off. This will make a coupon resistant to changes in store-wide sales or price increases.

I’d like to be able to create a promo code that will make any item in a certain category $5, regardless of the list price ($10, $11, $18). I’d like to limit this to single use, so if they buy two, the second is at regular price.