I bought my XP3 over a year ago from BigAls and as the add in Drs Foster & Smith says, it came with micro pad, 2 coarse, 2 fine pads, and a Bio-Chem Zorb pouch. No rings for me either? Must be NJ has some inside connections?
If you want cheap (other than army men which do work) go with Eheims Ehfimech. They're non-porous ceramic rings that go for around $6 U.S. for 1 liter. Porous rings and stars will advise you to replace a certain portion of the media after so many months. This is because the pores get clogged and the stuff inside the pores breaks down, adding to your biological demand. The non-porous stuff just "sheds" any film developing on it so it doesn't need replacing.