This project should take about half an hour; you will use tools you probably have in your DIY toolbox. As for cost, there are a few types of wax rings, but a basic one typically costs less than $5.
Necessary Tools:
Wrench
Plyers
Putty Knife
Turn off the water supply.
Flush the toilet.
Remove the remaining water with a cup.
Disconnect the water supply from the tank.
Remove the nuts and lift the toilet out of the workspace.
Remove the old wax ring and any excess wax.
Slide out and replace the closet bolts.
Place and center a new wax ring.
Reposition the toilet and secure all nuts.
Reconnect the water supply. Turn on the water. Check for leaks.
