Honestly, you never know what concessions the companies are willing to make until you make that complaint.
After complaining about a pizza I got where the mushroom wasn't cleaned and I bit into a mouthful of dirt, the company refunded my entire order. (I was hoping for a refund for that pizza alone when I called.)
One fabric company sent my next order with zero shipping after months of me waiting for a back-ordered fabric when I called in cancel that fabric and replace it with something else, even though they could have charged me shipping for the other new products.
Most companies want to keep your business, and keep their loyal customers, so it can't hurt to call in and see what they can do for you. As said, even if that difference was labeled as "handling", they could make a concession for you since you expressed some dissatisfaction.