As others have started, it's not bad at all. You can grind any of the mobs in the opposing factions area, they all drop the tokens I believe (and on the plus side, they also give Black Prince rep, if still needed). Once you have 2000 saved up, head over to the vendor, and have fun capturing your pet.
A zone wide announcement will be made that <character> has released the Sumprush Rodent, but fear not, they continuously spawn for quite some time, and you should have no trouble eventually catching a rare. Think I got mine after about 15-20 minutes of battling.