Apple raised iPad Pro prices in 2017 by $50 to address NAND memory chips price hikes from the vendors: https://www.cnbc.com/2017/09/13/ipad-pro-price-increase.html

Apple also raised iPad Pro prices when OLED screens were introduced.

	▲	rowanG077 a day ago \| parent [-]
		That's a new product, not a raise of he existing product as is discussed.