[quote name='Heyricochet']Best deal for me, Zelda CE + Guide, 15 bucks. Thanks Shrike!

[/QUOTE]
Glad someone mentioned my name in here.

I was starting to worry.
"Great deals" are in the eye of the beholder. It also depends on the motivation on who's selling, who's buying, and the reasons for both. People who sell because they need money can be better deals, because they're trying to generate cash and some cash is better than none. It also depends on the wants of both sides, since if one wants a game really badly, and they can trade for it instead of buy it, that might be a great deal for them, since it doesn't cost them money (at that moment) to get the game.
I think we all trade/sell/buy on CAG because we know the community, and for the most part, we do it to get games to/from other CAGs and know there tends to be much less crap around on CAG than on larger sites or on eBay. I know that's why I do it. I'm not in it for the money, if I was, I'd be on eBay. Shipping, packaging, and time all come into play, and it depends how much people value those things to be. My prices reflect just shipping + Paypal fees, the packaging and time I don't factor into there, as that's part of the process to make it sellable/tradeable.
If the other party is happy with the deal and they say so in their feedback, I'd consider it a "great deal" for them, since they're getting what they want, especially if they come back for a second (or third, or more) deal. I guess I must be doing something right, since I have quite a few CAGs that have come back more than once, and in some cases, more than 4 times. I go out of the way to pick up games for other CAGs when sales go on (like the current CC sale going on, and plenty of others in the past), since I know that a favor to one CAG can always be a favor back to you at another point. Never can have enough favors on here.
Just my $0.02.