Bought a set of authentic Griffin EarJams off eBay about 2weeks ago, and just received it in mail today, took 6days to arrive to my place! And it's just Australian inter-state postage. But at a price of AU$8.25 including postage, what else can i ask for?

RRP is at AU$35, what a bargain!
These EarJams comes with 3 pairs of rubber earpads that could be attached to the main clip-ons to fit various ear canal sizes. The earpads isolates noises and surrounding sounds, also prevents the sound from your music from escaping. The main clip-ons easily clips onto the earphones. As for maintainance, the EarJams could be easily detached from the earphones and are totally washable. The set even comes with a Griffins protective zip pouch, it can't fit my nano-clone, it's about 3/4 the size of it. Probably it is used for storing your earphones with the attached EarJams (the delicate rubber earpads wouldn't stand crushing and smashing in your bag).
But anyway, i immediately tested the EarJams. To my surprise, the sound quality produced was exceptionally good! And i mean REALLY good. The sound had a very nice deep-bass, especially with the Jazz equalizer setting. Another thing noted was that as compared to using the traditional soft foam earbuds, the volume was much louder at the same volume setting. I could reduce the volume setting by about 5 and still enjoy the same loudness as with the foam earbuds.
The EarJams boosts the bass response of the music quite significantly. So, when you are listening to music which are slightly high pitched, it mellows the music to a very comfortable pitch-tone.
A personal downside to the EarJams is, they are not very comfortable whilst plugged in my ears. Probably it might take a bit of getting used to. But they actually hold in place in my ear, does not drop out that easily.
Personal Rating:
Sound Quality
Bass Quality
Comfort
Price (RRP AU$35)
Value For Money