The CAH price does not matter to the deal. You now have .3 new CAH for each old CQT you held. To get what the current market value of your old CQT would have beeen, just multiply the CAH price by 0.3.
The only relevance of prices might be if you choose not to treat the scrip for scrip deal as a rollover for CGT purposes when you come to do your 2012 tax return. That is, you might decide to treat the transaction as a sale of CQT and purchase of CAH, in which case the VWAP of CAH on 18/10/11 (being the effective date of the scheme) will be the relevant price.
Assuming CGT is how you deal with your share transactions, most holders would simply use the rollover provisions to carry forward their CQT cost base and purchase date.
If you are a share trader and not applying CGT rules, the 18/10/11 CQT VWAP will be the sale and purchase price.
Note IMHO only. DYOR and talk to your accountant.
CQT Price at posting:
51.5¢ Sentiment: Hold Disclosure: Held