I haven't picked up any Blue Label Glocks this year (yet...), but I quick search of pricing can find a Glock 19 for right around $400. While I realize that this is pricing for LEO/Military/First Responders, it is something to consider when pricing out the VP9.
The whole safe-action striker-fired pistol market is saturated with options. That is because Glock secured such a massive market share (for good reason), and everyone else showed up late to the party looking for some tail. There are pretty much two ways to take market share from Glock: do it better, and do it cheaper. The S&W M&P may just do both, but that's another thread. The VP9 does a lot of things 'better', depending on who you ask. But, like any HK, you pay for what you get.
For cost of entry, cost to use, and cost to maintain, the Glock is pretty much unbeatable in the handgun world. This is why they continue to dominate the market, not just their arrogant marketing about 'perfection'. In the mean time, chew on HK's arrogance: 'in a world of compromise, some don't'. We get it, teutons make good stuff. I buy their stuff.
But the point still stands: the Glock 17 is cheaper on the outset, cheaper in the mid term, and cheaper in the long run, to own and operate. A trained monkey with a punch can swap out sub-assemblies on a glock, and the assemblies themselves can be had for what loose change I can find in my couch.
If you like the VP9, for all the reasons an HK is an HK, then get it. You'll pay a bit more for it, and you'll probably find what you paid for sitting in your hands, and showing up on the paper down range.