I am selling these through flipsy.com (they don't charge a fee to students, so I choose them over Amazon). Payment is through PayPal, so you are protected that way. See links below descriptions to view and/or purchase item. If you are interested in the purchasing multiple items, let me know and I will give you a discount. Let me know if you have any questions.

EK Audio Osmosis (note- CD #6 is scratched and does not play without skipping)- $115:
http://flipsy.com/buy/927907 - comes with carrying case for all 12 CD's.

EK Complete Study Package- $110
http://flipsy.com/buy/927908

EK VR 101- $20
http://flipsy.com/buy/927906

EK Bio 1001- $20
http://flipsy.com/buy/927901

EK Physics 1001- $15
http://flipsy.com/buy/927925

EK Chemistry 1001- $15
http://flipsy.com/buy/927924