You will have a storefront to visit and shop.
You will have experienced designers on staff to create your design.
You will have experienced sales people on staff who know what is available and of the best quality to help with your selection and who will get to know you and your tastes.
They can create a custom design just for you.
They will know what's appropriate and available in your area, for example, funeral work is very regional and what's appropriate in one area may be different in another. Your local florist will know this.
They will value you as a customer and will assure your order is done properly, whether it is a local or out-of-town order.