The agency I worked for used to offer a "special" for a brochure site. Basically it was a "website-in-a-day" deal. Customer comes to the agency in the morning, meets with designer and manager, and they agree a design (preliminary work has already been done on a logo). Customer goes for lunch, and the design is handed to two devs. Around 4PM the customer gets sight of what the devs have done, and goes home. The devs work on until say 8PM, and probably put in a couple of hours the next day.

Of course, there was then snagging; it wasn't really a one-day job. The whole deal was pretty inexpensive. We used Drupal with a custom theme.

I don't know whether we made money on these projects, but we did end up with a string of long-term customers.