According to new stats from NPD Group, Apple now claims 91 percent of the U.S. retail market for personal computers costing more than $1,000. Nine out of 10 dollars spent on such machines in June went to Cupertino.

Now, granted, Cupertino only sells three Macs priced below $1,000 (the 13-inch MacBook and both versions of the Mac Mini), and Apple’s (AAPL) rivals’ offerings typically price out in the $690 -to-$703 range. Still, that 91 percent metric is impressive.

As Joe Wilcox over at Betanews puts it, “A (higher pricing) doesn’t necessarily lead to B (greater sales). All major Windows OEMs sell PCs in the premium category, too. Apple’s charging more isn’t necessarily recipe for people paying more for Macs, or their capturing big revenue share.”

That said, as NPD analyst Stephen Baker points out, Windows product average selling prices have been falling pretty rapidly over time, especially at retail, so it was inevitable that Apple’s share of the high-end market would rise, since the company hasn’t really altered its pricing philosophy.

Now, Mini-Microsoft is not an official company blog, and it’s penned by an anonymous author. So the layoff rumor it’s floating should be viewed as just that, a rumor. That said, the blog has long been a clearinghouse for internal information Microsoft would much prefer to keep under wraps–and a fairly accurate one at that. So it’s certainly worth paying attention to. As Joe Wilcox writes over at Microsoft Watch, “When Mini speaks layoffs, I believe.”