Nothing more is revealed about the potentially upcoming model in the listing, with the only image being a placeholder box suitable for any theme. The possible $249.99 price is the same as 75936 Jurassic Park: T. rex Rampage, the largest currently available LEGO Jurassic Park model with the theme also encompassing the newer Jurassic World movies and media.
In response to a post mentioning the listing, Instagram user lego_club_news stated that this was indeed an error, and whilst the set is coming it is said to only be priced at $50. This has not been confirmed, but we should at least know more by April 2022. It may be wise to treat this as a rumour until officially announced by the LEGO Group.
Note that the featured image depicts 75936 Jurassic Park: T. rex Rampage and not the listed model. The officially-released build is available now from the official online store but will be retiring soon. You can read our in-depth review of the massive set here.