900 bucks? You can’t get anything of substance done in the US for 900 dollars these days.
Also, the house will forever be linked to having a radon problem.
Unless you have your heart set on that particular house (and it is a screaming deal) just find another house. It is the best buyer’s market in 75 years!
$900 my arse.. Mitigation of Radon is much more expensive and is exponentially dictated by the degree of radon exposure. Even a generous mitigation quote would cost about $1800, and as much as $5000.
D-