Amazon has the 6th-Gen. Apple iPad mini 8.3" 64GB WiFi Tablet (MK7M3LL/A, Space Gray) for $400 with free shipping. List price: $499. Features 8.3" 2266x1488 liquid Retina display, Apple A15 Bionic 2.4GHz octa-core processor, iPadOS 15.0.
Has excellent Amazon Reviews.
Amazon has the Samsung Galaxy Tab S8+ 128GB 12.4" Android Tablet (2022, 3 color options, SM-X800NZAAXAR) for $600 with free shipping. Features Qualcomm Snapdragon 8 2.99GHz Octa-Core, 8GB RAM, 128GB SSD, 12.4" AMOLED WQXGA+ (2800 x 1752 @ 120Hz), 802.11ax, BT 5.2, Android 12, MicroSD (Up to 1TB), USB 3.2, 10090 mAh battery. Has excellent Amazon Reviews.