Workbook 1 has about 15 lessons missing and a few random lessons and workbook2 is new and unused. Retail on these are $24.95 each plus tax and shipping. I also have the resource pack which I believe it is complete. I bought this planning on using it and soon relized my son was way ahead of this curriculum. This is in my opinion k4 and early k5. Make offer. I need to clear some space! Will gladly trade for 3rd grade Abeka items.