No, it's etsy.com. Though you can probably buy them (the technical term is "fluffies", which is also used for mei-tais and cloth diapers) on ebay as well.

I don't use a menstrual cup, preferring my pads (they're just so pretty! I have one with robo dinosaurs on it, and you can't beat robo dinosaurs), but my sister and one IRL friend use divacups (and plenty of my online friends do as well), and they swear by them, say that they're incredibly freeing - no worrying about leaking, no having to change your pad or tampon (you empty your cup about three times a day), no worries about TSS, no discomfort, no odor, no running out, much cheaper per month than 'sposies - wonderful.