Hi, I was wondering if the Prada experts can help me here...I would like to buy a Prada keychain and I see some on eBay, but they are so inexpensive that I'm not sure if they're authentic. I also don't know the retail price for Prada key chains, so it's hard for me to tell, but I've seen some Prada keychains sell on eBay for $20...does it make sense that it's really that cheap? Any Prada keychain experts out there? How much do they retail for? If you have one, do you like yours? Thank you!