Purchasing a toilet yourself or through a plumber?? : r/askaplumber - Reddit
The main advantage of having a plumber buy the toilet for you is that they handle the delivery, which can be inconvenient for you to manage on your own.

Toilet Installation Services at Home Depot
Our expert plumbers are prompt and polite, offering comprehensive installation services, which include removing and disposing of your old toilet as well as installing the new one.

How Much Do Plumbers Charge for Toilet Replacement?
The typical cost to replace a toilet falls between $225 and $550, with the national average being about $375.