It depends on your business plan and how your policies will be received in your area. You still must be in the right price range for your business's place in the market.
How you choose to show the fee is also an issue. Do you build it in or charge extra? Build in a flat fee and charge an adjusted add-on price? No one can really answer this question for you.
Part of my business was based on delivery and I have many of them that go out together. This is another scenario. Because this segment of the my business competes with florists and Edible Arrangements, I priced similarly. For wedding cakes, corporate events, out-of-area deliveries, it is on a per case basis. Sometimes added in, added a-la-carte, or upcharged.