问题
I am supposed to design a promotion like when a particular product is added to the cart, the other product should be sold for a specific price.
I was seeing some out of the box templates but I could not find the :Buy X Get Y for Z dollars type of promotion template.Also perfect partner fixed price looked to be the one, but there I had difficulty as the selection criteria is not necessarily useful for this.
来源：https://stackoverflow.com/questions/57079286/how-to-configure-a-promotion-like-buy-x-get-y-for-price-z