Posted By:
Al C.risafulliI'd list them individually, but all at once so that the auctions close on a Sunday or Monday evening, each within 3 or 4 minutes of each other.
I don't think you need to worry about breaking anyone's bank on these, unless they're big-time cards. But by listing them close together, you can use the copy in your descriptions to advertise your other auctions. This might encourage an underbidder to go bid higher on a lot that closes later.
I also notice that some of the higher-volume sellers of shinier cards like to make one scan of four cards, and make sure the buyer knows "you're only bidding on the card described in the auction." I think the reason they do this is to use each auction to show cards that they're offering in other auctions. I tried this approach with some high-grade 1961 Fleer baseball cards a while back, and found that it worked very well.
Good luck!
-Al