Some of you may have already known about this, but I just came across this and thought this may be of use to some of you who may not be aware of it. It aggregates PCGS coins across multiple auction and dealer sites into one place on the PCGS site, so it saves you time and money. It's sort of like Expedia, Kayak, Orbitz, etc. that pulls in travel airfares across multiple sites but for coins. http://www.pcgs.com/shop/sets
It's a great tool but is only availble to PCGS Registry Memebers, and only aggregates PCGS coins. Hopefully, PCGS will eventually open it up to a larger base of users, and to all certified coins from the big 3 TPG's.
I can see it and I'm not a registry member... at least I don't think I am. I signed up as a free user today to check out the aggregator feature, and I can see all the auctions and jump to those links.