Anyone into cars/electronics? Help me install my dashcam!

Apparently it costs like upwards of $300 to get this bad boy (https://www.amazon.com/dp/B0CDWSCK7T?ref=ppx_yo2ov_dt_b_fed_asin_title) "hardwired" to my car. Idk what that means I'm not hard wired to spend $300+ for car stuff--I'm just a girl. Maybe you're into cars? Maybe you're into dashcams? Maybe you're into $100? Coffee/tea/snacks/lots of kisses from my dog provided while you tinker.