Nothing is usual.
If an agent requires exclusivity, it's your choice as to whether or not you want to abide by that provision. Before agreeing to an exclusivity arrangement, however, I would find out what that agent will do for you and how long the exclusivity arrangement would be. If an agent requires exclusivity, it's your choice as to whether or not you want to abide by that provision. Before agreeing to an exclusivity arrangement, however, I would find out what that agent will do for you and how long the exclusivity arrangement would be.