If your goal is "Buy PTE Certificate", bear in mind that just official evaluation results count

https://www.mediafire.com/file/5ba25zt4ql2oz3s/pdf-3715-77765.pdf/file

If your goal is "Buy PTE Certificate", bear in mind that only main examination results count. Usage practice tests, improve precision and timing, and earn a validated Pearson PTE result through the examination.