The CVT's in the 10th gen Civics have been around for about 6 years. The CVT in the 1.5t was in the previous gen Accord and the CVT in the 2.0 was in the Civic from the 2014 model year. There have been very few problems reported and the problems that have been reported are usually on 1.5t Civics with performance modifications.
Beware that some scammers remove their modifications before they get rid of the car.