"At launch, the Atari 800 retailed for $999 with 16K of RAM (about $3,387 when adjusted for inflation), and the Atari 400 with 8K retailed for $549 (about $1,861 today)."
https://www.fastcompany.com/90432140/how-atari-took-on-apple-in-the-1980s-home-pc-wars