The pack should cost less than the normal price?

Six of the games have no price, thus the "total price" appears less than the bundle price.

Geneforge 1-5 is another $19.99 and Avernum 4 is $4.99 so it should be $59.93 for the total price.

On the other hand, a bunch of them can't be purchased individually - so of course the bundle price looks higher than the individual price.

Even without prices, individual games cost much than the pack, here, in Portugal.