markw,
You can order from Hagen's any quantity, like JBlaze described above. They will charge also 10% tax, if you don't have Tax ID .
Another option is Lakeland - great selection & quality of musky/pike blades. 0.17, 0.25 & 0.40 gauge are available. Same payment scheme, as Hagen's
LakeLand
You can also order them from Dick Moore. Give him a call and you'll be all set in a couple minutes. Very nice gentleman to deal with.
Moore
Hope it helps