I would make sure to know your stuff and research a purchase. Skis tend to have a shelf life to the bindings and are only idemnified for 10ish years for safety and fb marketplace (and some secondhand stores) have some very old skis. Someone who knows how to do bindings will have the knowledge/skills to repurpose older stuff and avoid injury.

It sounds like you're looking to purchase like new, so this is less likely to be an issue, but there might be really old bindings or barely used skis so check the info.