No problemo. Get it over at Orbitus-superstore.com. It is the cheapest of the froogle.com seach results after shipping. Two bottles will cost you $59.27 after shipping and they have the newest formula that starts with an "S" serial number. You might want to wait another week though as the Revita shampoo might be out by then.
RS supposedly doesnt cause shedding, DNC is said to cause shedding/might, although i havent seen any shedding from DNC. It has enough natural topicals and other stuff to likely subdue the shedding.