This is probably gonna be standard pricing across retailers with some going even lower.
Best Buy's already offered these deals during their pre-Black Friday sales with Amazon price matching select offers (they didn't price match the $250 iPad and instead removed themselves from the list of sellers).
iPad 10.2-inch ($80-100 off)
32GB Wi-Fi $250
128GB Wi-Fi $330
32GB Wi-Fi+Cellular $380
128GB Wi-Fi+Cellular $460
iPad Air ($100 off)
64GB Wi-Fi $400
256GB Wi-Fi $550
64GB Wi-Fi+Cellular $530
256GB Wi-Fi+Cellular $680
iPad Pro 11-inch ($150 off)
64GB Wi-Fi $650
256GB Wi-Fi $800
512GB Wi-Fi $1,000
1TB Wi-Fi $xxx (this probably should be $1,200 but looks like BBY hasn't updated the new MSRP yet)
64GB Wi-Fi+Cellular $800
256GB Wi-Fi+Cellular $950
512GB Wi-Fi+Cellular $1,150
1TB Wi-Fi+Cellular $1,350
iPad Pro 12.9-inch ($150-200 off)
64GB Wi-Fi $850
256GB Wi-Fi $950
512GB Wi-Fi $1,150
1TB Wi-Fi $1,350
64GB Wi-Fi+Cellular $950
256GB Wi-Fi+Cellular $1,100
512GB Wi-Fi+Cellular $1,300
1TB Wi-Fi+Cellular $1,500