This higher-wattage charger should come bundled in the box with all new 12.9 inch iPad Pros sold. I don’t care that it didn’t exist at first. The current charger Apple ships is mediocre, bordering on unacceptable. It barely does the job: you can’t use the iPad whilst charging and expect the battery percentage to go up. Apple should not punish new Pro customers with the 12 watt charger just because it shipped a 12 watt charger initially. Now that something better is available, include that in the box. Enough said.
Harsh, but I agree.