Best source of FP 100 or 3000 packfilm

[anglophone1]

I'm looking at doing a project either shot on a Polaroid 195 or Holga with Polaback using Fujiroid Fp100 and Fp 3000, which seems to vary wildly in price.
Can anyone point me in direction of a cheap bulk source for 100 sheets [10 packs] of each?

[Ari]

eBay sellers usually have pretty good bulk prices, B&H has decent prices per unit.