Comcast instal/cablecard fee new service Bay Area

Trying to save some money I scheduled new Comcast cable services for my parents. They will be switching from AT&T u-verse. Upon completion of telephone order I was billed $100 install fee they said was necessary because it had been more than three years since Comcast service was at that house. Does this sound right to everybody? Also I noticed a $1.50 CableCARD fee attached to first months service. Comcast told me if were within the 30 day guarantee the install fee will also be refunded . If we are unsatisfied with service do you guys think I'll be able to easily reinstall the uverse equipment myself avoiding having AT&T schedule a truck roll to reinstall which I'm sure I'd be billed for? U-verse unlike Comcast lets me put services on suspension while I evaluate Comcast so I'm not concurrently billed for both services.