It means the FOB price, or basically the price without shipping can run from $0.04 to $0.07. The 3 cent spread may have to do with quantity, options, whatever. When you see a listing like that FOB Price means plus shipping. As far as the 3 cent variation, you need to contact them.
A project manager is a professional in the field of project management. Project managers can have the responsibility of the planning, execution, and closing of any project, typically relating to construction industry, engineering, architecture, computing, and telecommunications.
Project management is the process of planning and organizing tasks to accomplish a successful project. Projects are one-time temporary efforts designed to produce a specific result, such as installing a new computer system or planning an event. They can last for a week or years, but a project has an end date.