The cheapest you can get all of that stuff at the bookstore is about $240. That includes:
1. Human Sexuality Today- King
2. Human Sexuality- McDermott
3. Culture & Sexuality- McDermott
4. Radio Frequency Response Card- Turing Technologies (you have to use the Turing brand)
I'll sell you my stuff for $170, and I'll even throw in an extra scantron form and my old tests for you to study off of. Reply here if you're interested!