Did you try the option of network rendering? This sometimes solves the problems with memory that occurs in Vegas 9, even if you are just using one PC without network-connected render machines.
Go to the toolbar and activate the RIPPLE EDIT function (or press Ctrl L). This allows you to insert an event while all the other events move away. Note that you can select several options about how the ripple edit will behave…
Ofcourse it is very personal whether something is worth the price. I also got the mail from Digital Juice offering a second DVD for free. So I had a look at it and decided that for me it is not worth the price….