Retail Price for Schweser Audio CD’s = $299 Discounted Price After Buying Schweser Study Package = $150 Since Stalla does not offer audio cd’s (and some other stand-alone products), one could easily make a few bucks on eBay …and maybe I would not have to spend so much. 
It’s really too bad that you have to exercise the option, bring in third-parties like eBay and PayPal, and deal with sending Audio CDs through the mail. If Schweser had any decency and wanted to give people real-world derivatives experience, the Schweser Study packet would include a completely sellable American call option on Audio CD’s with strike = $150 and expiry = next test date.