If there is a petsmart around you, they honor their internet prices. I pay 32 for 160g of IO.
You just have to print out their website price and bring that to the store
www.petsmart.com
I order mine from drs foster & smith. They don't charge additional shipping.
in a few months lets do a MR salt groupbuy just so we can pissoff the fedex person with 30+ buckets
i'll have everyone come over. we'll setup lawn chairs and a beer cooler and just laugh