Tesla doesn’t do incentives like most automakers do, but that doesn’t mean that Tesla doesn’t . Because , and usually by surprise, and usually for reasons only known to Tesla.

The latest was this week, when Tesla upped the price of the Model Y Long Range by $1,000, the Model S Plaid+ by $10,000, the Model 3 Standard Range Plus by $500, and the Model 3 Long Range by $500. Which means those cars now cost $49,990, $149,990, $37,490, and $46,490, respectively, not including options.

Now, the Tesla Model S Plaid+ was already pretty expensive, so buyers of that car probably won’t even notice that they are paying another $10,000 on top of the $139,990 they were already paying. And buyers of the Model 3 Standard Range Plus and Model 3 Long Range likewise also won’t notice much of a difference, given that $500 is $500.

But an extra $1,000 for the cheapest on-menu Model Y issignificant, or about a 2.5 percent increase, which is the kind of thing that many buyers at that level will notice. What gives? My best guess is that there is more demand for the Model Y than supply at the moment, perhaps because of the global chip shortage that Tesla .

You might be better off waiting, in other words, if you’re in the market for a Model Y, until Tesla’s production is more stabilized. My other guess is that someone at Tesla got their first good look at the Volkswagen ID.4, , had a good laugh, and decided that the Model Y is just that much better.

At any rate, the price of the $60,990 Model Y Performance is not changed, though if the Long Range price holds at almost $50,000, the Performance version will start to look like the better value. Tread carefully, Tesla buyers.

Well, I feel like an idiot for trusting such news sources as “Reuters” and “Google” but anyway the figures in this story have been corrected, as they have been in those places.