Are you sure that's not Instant Ocean?...Last i checked Oceanic comes in 200gal buckets. You might be confusing it with IO since they were the ones that went to the 160gal buckets.
But call them anyway, things might have changed since i was last there. I know Aquarium Adventure out in the island has it, but at a higher price.
I have buckets in ALBANY for 50.00 a 200 gal pail. they are a decent salt so far. I have been playing with some, but am still steadfast on the AQUACRAFT Biosea salt.