While it might be all the rage with clients, it can sometimes cause massive headaches for ecommerce store owners if you do not have exact costs for your products. (shopifynation.com)
I used to do that years ago, and I'd wake up with massive headaches. (fortydaysofdating.com)
There was even one cleanse diet I couldn't finish because I got massive headaches. (theholisticmama.com)