As part of the migration application, there are several government and other charges which must be paid in order to process. The information set out in your Personalised Migration Plan includes a summary of the costs you should anticipate as part of the process.
Currently, the processing time for skilled visa applications is between 6-48 months. This of course varies from case to case and delays will occur if the application is incomplete or missing supporting documentation. When your visa is granted, it will include a validity date indicating the latest date by which you must use your visa to Canada. Generally, this will be up to 12 months from the date your medical examinations were completed. Once you have made your first entry, you are then free to travel around Canada or internationally.