The cost to fix a cracked tub can vary depending on the material the tub is made of and if you hire the job out or fix the cracked tub yourself.
If you hire the job out to someone to fix the cracked tub it can cost from $100.00 to $300.00 to fix the cracked tub and restore it to it's original finish.
However if you fix the tub yourself then it will cost you only your time and the cost of the materials to fix the tub.
If the tub is a fiberglass tub and has a crack you can use a fiberglass epoxy to seal the fiberglass tub up and fix the crack.
You drill small holes at the ends of the cracks and then fill the crack and holes with the fiberglass epoxy and allow it to dry and cure.
Then you sand the fiberglass epoxy down and then use some polish or fiberglass coating over the tub.
You an also buy a tub repair and refinishing kit where you can fix cracks in acrylic tubs, fiberglass tubs, and porcelain tubs.
The cost of the kit is around $135.00 online for the tub repair kit.