it depends
one of my customers had to replace his booster pump twice in 1 year

My booster pump is going into the 11th year, no issues knock on wood. Keep in mind I'm in MI so it is only used 5-6 months of the year.

We've had pressure side cleaners for 27 years and we have replaced the booster pump at least once, maybe twice. We are in California and have lots of trees near the pool including redwoods so use it 12 months a year.