Crafting Panel: Must you make your own tools?

Many paths teach that you need to make your own magical tools, not purchase them. Others say that it’s OK to purchase, but you must not haggle. Are bespoke/commissioned tools better than off the shelf? What about tools crafted by another practitioner with the intent of being magical tools? Is this still appropriate? How far do you take it? Is sewing your own robe enough, or do you need to weave the cloth? Or is this all nonsense and you simply need a functional item that you dedicate for a purpose? (Is it perfectly reasonable to go to your local festival or conference and pick something gorgeous up from the dealers room, if it calls to you?)

Panelists: Starwolf, Raven Kaldera, and Tchipakkan (room for one more)