Hi RC,
You can get an idea of their tracking to the index on their website under performance (see link below). On the 'key facts' tab of the same page you can track the underlying Net Asset Value - live NAV (iNAV- 20 min delayed) upon which the bid/ask price will be based.
I have the LONSEC report on the ETF which does provide some useful information.
One thing I wanted to check out was who the swap counterparty is- as this is an area of risk- its Credit Suisse. I've recently spoken to Betashares compliance dept who were very helpful. If you have any questions/issues I encourage you to give them a call (e.g. ensuring you have completed a self certification for FATCA regulations).
