We do have a Builder Network with Knack-vetted builders who can build your apps for you.
You can submit your project with details about your requirements, budget, and timeline. The builders will provide you with an estimate to build your app for you. You can then work with the builder of your choice to complete your project.
Projects can include building new apps, finishing existing apps, adding custom code customizations, or adding integrations.
You can learn more and submit your project details here: https://knack.com/build-my-app
Note: The cost for building your app are set by the individual builder based on project size, complexity, and timeline. So there is no set range or average cost for projects that we can offer right now. We are working on providing better information on this in the future.