Also, you can find used CDR220 radios on ebay for $150-200.
Oh, and no- CPO is not a rip off. Just wait if you get a catastrophic engine failure or other major issue, and you will see just how valuable CPO can be.
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Current: 07 Carrera S Cab in Midnight Blue
Previous: 01 Boxster in Arctic Silver, 86 944 in Guards Red
It is my (false?) recollection that in the states, Emissions related equipment is covered for 6-7 years or 100,000 miles. Might want to read the owners manual as it may shed light on this. Not sure about Canada, eh?