a stratasys/objet reseller in Canada is selling his own resin on the side for exactly half the price objet is selling the regular resin. If you want OEM material he will sell you resin at the dental price without going through the process of getting approved.
They are really secretive about it because they are one of the original objet resellers in the Toronto area and they knocked off every resin including support material. Try calling them instead of email.