Translations:Potential Unlock/19/en
From DragonMineZ Wiki
Level 11 can't be bought with TP. Visit Grand Elder Guru at the Grand Elder's House on Namek and pick his Unlock Potential service: it raises Potential Unlock from level 10 to 11 if your alignment is 50 or higher (below 50 he greets you coldly). After that, levels 12 and 13 can be bought again.