The process is a real differentiator against a big-box competitor
A large chain print competitor generally cannot show an individual process the way a local shop can. Content showing a proof review, a color-matching decision, or a finishing technique demonstrates the care and craft a customer is paying more for when they choose a local shop over the cheaper big-box alternative.
The finished product is naturally visual, but the range of work is the real selling point
A finished piece photographs well and is worth showing consistently, whether it is a business card, a banner, or a custom design. But a shop's real advantage is often the breadth of what it can produce. A varied portfolio across formats and use cases attracts a wider range of prospective clients than repeatedly showing the same category of work.
Real client use cases demonstrate value better than the product alone
Showing a finished piece in use, a banner up at an event or business cards being handed out, demonstrates real-world value in a way a studio product photo cannot. It also helps a prospective client picture their own project in a similar context.