Whats the dif between foci and fetish? Options

[Abbandon]

Hi. The core book talks about limiting spells when you learn them which require fetishes but it doesnt talk about fetishes anywhere else!!!

#1. How much do they cost??
#2. Do you have to bond them?

In the section on Foci it says you can only use one foci to help with any particular spell.

#3. Can you use a foci and a fetish for the same spell?
#4. Do fetishs have a maximum number that you can have? Do they count towards a foci's max limit of Logic?

Can you make a foci/fetish be a tatoo?? Bond the ink and then get it tatoo'ed into your skin?

How would you guys feel about cosmetic surgeries to insert objects into the body?? The best most vivid example I could think of is how some people get different kind of body studs. Like spikes along their forehead or the top of their heads.