Here's a little plug for Telerik's Windows 8 RadControls, which has been released into the wild.
Like their other RadControl suites, RadControls for Windows 8 are pre-built controls for developers. It's nice that they come in both XAML and HTML flavours, which work identically.
While there aren't as many in the set as compared to some of their other RadControls (like the Windows Phone 8 one), I can see some of those controls really coming in handy for future work I've got dreamed up. You can't buy time, but you can probably save a decent chunk of time by using what you can from control packs like these.
It seems like the bundle is $99 USD at the moment, and slated to increase as time goes on, so if you can convince your boss to get in early, you can probably save some coin, too!