http://www.greatcollections.com/greatcollections-vs-ebay I personally have not used this site, but may try in future. If think this is off topic, feel free to delete this. I am not associated with this website in any way
In just a couple of minutes of looking I was able to determine that site can't even come remotely close to eBay in terms of diversity of coins available. Also, it lacks at least one very important feature....the ability to search past sold and completed listings. Besides, there's more than enough credible and reputable sellers and dealers on eBay selling NGC, PCGS, and ANACS certified coins. I'm definitely sticking with eBay. .
I think new "competition" is always welcomed, might affect eBay changing some of its lame policies, especially regarding fake stuff. Especially lately for me eBay lost a lot of "charm" with forcing sellers to use Global shipping program, which is too expensive. Dunno how old is the site, but it's always chance it will grow.
