I had been preparing for BEC before I ran into Duolinguo English Test.Due to the coronavirus pandemic,BEC has been cancelled in the second half of 2021 and then been cancelled in Dec of this year.I started to doubted those offline English tests out of this kind of uncertainty.
Offline English tests are restricted by not only the places,but also the time traps you so much.Such as you can't take tests in the place where you are living or working,but have to go to the provincial capitals.Some English tests are just held twice a year.One is in the first half of the year,and another is in the second,like BEC.It'll be totally different that you can take the test anytime anywhere as long as you have a computer with stable connection.A very special advantage of Duolinguo English test is that you can get the result within 2 days.
As for the fee of Duolinguo English Test,it attracts to me so much.I can take a test,which requires only one-sixth of a test taken from IELTS or TOEFL.It will really have saved me a lot of money.