Chanel saw an opportunity to raise prices, and they exercised that opportunity. Notice the steepest price increases were for their hand bags. These didn't have any major production constraint - the workers in the factory had to be spaced further apart in COVID, so it just took more floor space. Nevertheless, factory space is not a major cost component in the total cost of handbag production - even if factory rents were to double, the cost to Chanel to manufacture a handbag wouldn't go up significantly - but they'd sure use that as an excuse to raise prices. Sure, Chanel will claim materials cost more too, but materials costs never amount to more than 10% of the total value of the handbag...
Let's tie that over to JLC. Here, JLC is trying to go more higher end. They're doing more events. Seminars too. They're doing more customer engagement and mini exhibitions like the Patek Philippe Exhibitions. These events all cost money. And they are supposed to increase the brand's awareness perception among consumers. And with that increased awareness and perception, JLC's logic is that they can charge more money for their product.