Where to buy LI-90B battery for the TG-1?

I've had the TG-1 for a few days now (from Best Buy) and like it a lot. However, I am not able to find any spare LI-90B batteries for this camera. I ordered a few LI-50B batteries hoping that they fit but.. it would feel more comfortable using the correct battery. I just got off the phone with Olympus USA and the guy on the phone could not even find them on his list..

Has anyone had any luck finding spare LI-90B batteries yet?