This set was the full set of AM/PM recovery (600$). I have not used/opened any of the AM serums. I have used 3 out of the 4, PM serums. If you were to buy just the 4 Am set it retails for 325$. This open box (unused X 5) of serums will include 4 AM serums and one PM serum. changed my routine, I opened this box last month, but the remaining serums have never been opened.