You can take one or more of the tests again. However, note that some provinces have special requirements for candidates who don’t pass the GED® test the first time. For the specific regulations, check the testing policy in your province.
The price of the initial test is set by each province and varies based on where you take the test. The price of the retest also varies based on where you retest. To see what your retake price will be, check the testing policy in your location.