eh...this is where the call to buy becomes iffy imo.....but maybe someone else here can give better input.
I usually avoid vehicles that need a cat replacement, especially vehicles with the N52 engine...it can either be truly defective or lack of maintenance....but live data is generally the best assessment on overall engine condition.
Link:
https://www.shadetreegarage.com/blog...tic-converter/
Another link:
https://www.vipermotorsports.com/Abo...he%20converter.
Basically there's a high chance of lack of maintenance. When I picked up my X3 this year, I look for the least amount of fixes to do...in my case it was just tires and dealer replaced the tailgate control module. Rest was fluid maintenance.