How do you price projects — flat fee, hourly, or retainer?

Most projects — like logos and websites — are priced per-project rather than hourly. For maintenance, updates, or revisions to older projects, I often work on an hourly basis instead. I also offer retainer arrangements for established clients, though I prefer to complete logo and website work on a per-project basis first, since those aren’t well-suited to retainer work. Print materials, on the other hand, work well on retainer at any stage of our relationship.