I used these in the school year 2010-2011 with the redesigned curriculum.
Bookshelf Central prices are in blue and my prices are in red. Books I bought new are about 1/2 off. Books I bought used are about 2/3 off.

Feasts of Adonai (purchased new) $24/$12
Mytholgy (purchased new) $11.50/$6
Pharoahs of Ancient Egypt $5.20/$2
These were the Greek $27.95/$9
These were the Romans $27.95/$9

Total is $38. Preference is given to the buyer to takes the lot. Take the lot and get free media mail shipping.