For a fixed monthly fee, you receive as many design revisions and mockups as you desire. All services offer a queue for you to continually request design tasks and they are fulfilled in order of your request.
Most of the services offer a money back guarantee and some will even give you free services if you put in a credit card to verify your commitment.
The prices range from incredibly affordable ($200/mo) to premium prices (over $1,000/mo). Most of the cost is baked into two needs: project management and time. If your goal is to scale up your design needs without any hand holding, then opt for the higher end of the price range (you're really hiring a design manager and designer). But if your needs are more aligned with having too many projects, start with the basics and hire a designer to work with you to deliver designs on a regular cadence.
All the companies on Service List offer engagements with zero contracts. Subscribe and unsubscribe at any point!
For the most part you can expect designs in your inbox every other day. However depending on the complexity you may need to wait a day or so longer if your needs are more intense (think a whole brand design). Also if you have worked with a company for several months you, we've seen turnaround times within a day.