Xbox's proprietary SSDs have been a source of contention among fans due in part to the high price caused by the exclusive deal arranged with Seagate, but Best Buy currently has the 2TB SSDs for $120 off MSRP and $70 off of the 1TB version.

source https://www.windowscentral.com/gaming/xbox/this-crazy-good-deal-could-save-you-dollar120-on-the-seagate-2tb-storage-card-for-xbox-series-xors