Unfortunately, the price increase was due to the crappy performance of the US dollar against the Canadian dollar...Paradigm (another Canuck co) also raised prices on many of their products (thanks George, you jackass). As far as upgrades go, you can't go wrong...each upgrade includes updates from previous upgrades. If you need multi-region capability, simply install whatever MR update is available after installing the Denon update. As far as DL3, it kicks butt and takes names...but it's a waste unless you have a DL3 AVR.
Jason