Levels 1-100 no money should be spent on items other than potions thanks to the 5/5 set quest rewards.
By level 120 you should have farmed
5+10+15+20+25 Seph gems (75)
And 30 magic
And 30 sorcery
To get priority master skills to level 7.
Alternate methods below;
The best way to do this would be staying on iah or shuy until you have the above listed gems.
At level 100 you unlock a quest series in vylock where you can purchase items usi