If your goal is "Buy PTE Certificate", keep in mind that only official assessment results count
https://authentic-pte-certificate-onlinerfhm523.terracolumn.com/posts/everything-you-need-to-be-aware-of-pte-academic-certificate-online
If your objective is "Buy PTE Certificate", keep in mind that just official evaluation results count. Use practice tests, improve accuracy and timing, and earn a verified Pearson PTE result through the test.