Why you say? Service. I believe this will solve the confusion when clients place their orders. I will be there with them to answer all their questions when they are ordering. I will also be able to show them the product in person so they may decided which ones they like best.
For instance, say you buy a collection but there is one item you would rather trade out for another. Well most photographers will work with clients on these things but if we aren't there for you to ask most clients will just place the order as is.
Also I want to be there when clients see their images. I want to know which ones they like and don't and why. How can I learn and know what clients think if I just post a gallery and wait for an order.
Ordering in person was the way it was done for years and years. But we have gotten away from taking the time to work with customers and help them and we traded that for the convenience of an online gallery. The online gallery service has been in response the customers wanting the gallery, however, I believe that having a viewing appointment will actually turn out to be a better way. I look forward to helping my customers and providing this service.