Thanks for the info. From my accounting, there should be only 5 civs that aren't part of the original or G&K set they are: Babylon, Korea, Denmark, Inca, and Polynesia.
I bought 5 of the DLC expansions needed for the above civs including the korea + wonders of the ancient world, but I have to wait 3 to 5 days before my paypal account can add some funds.
I guess $30 is a reasonable price ... I assume I won't have any problems downloading a second time in the future, if I should buy another computer (or upgrade), say, and I wan't to load civ5 onto it plus the DLC I'd purchased at an earlier date? That's generally why I prefer to have physical disks (no problems loading on different computers, or future system upgrades).