If your goal is "Buy PTE Certificate", keep in mind that just main assessment outcomes count
https://telegra.ph/The-Buy-Fast-Track-PTE-Certificate-Awards-The-Top-Worst-Or-Weirdest-Things-Weve-Seen-11-12
If your objective is "Buy PTE Certificate", remember that just main assessment results count. Use practice tests, improve precision and timing, and make a validated Pearson PTE result through the test.