Apart from IELTS being a requirement for some VISA applications or an acceptance into a certain school, it's also meant to assist you in realizing whether or not you'll be able to meet the communication demands of your new environment. Failure to which, one would put more effort in learning how to communicate proficiently in English.
Another thing is, if you bought it, you'd probably get caught. IELTS (the organisation ) has measures in place to verify whether or not Test Report Forms (TRFs) have been issued by them, or if they are forgeries. There is a high level of security that goes into IELTS exams.
As long as you only need one of these to frame and hang on your wall they are fine; however, if you choose to use one for immigration purposes or to gain entry to a reputable educational institution you will find yourself rejected and probably banned for life from reapplying. The problem is that all these institutions know about the scam certificates so they place an access request to the BC/IDP database to check the applicant’s listing. If there is no match then they know the certificate is a forgery. All of the scammers claim that they can hack the IELTS database to include these forged certificates but the BC/IDP security is far too strong to allow such access. In the end the applicant is held holding a very expensive document that has little practical use.
It’s not worth bothering, you can’t use them, you will get found out (at least for IELTS and almost certainly for TOEFL too). The system is very robust; IELTS is always testing the system to make sure it can’t be hacked. You will just be wasting money. The only way round it is hard, I’m afraid - actually get the required bands legitimately by learning English and preparing for the exam.
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