Rough Estimate For Bathroom Remodelling ?

I’m looking for a rough estimate (say within a few hundred $) on a bathroom remodelling, looking to do the floor (about 5′ x 5′ area) and the 3 walls for the Bathtub/Shower (maybe 10′ x 6′ area) with ceramic tiles (so about 85 square feet) as well as we-doing the drywall for the Bathtub/Shower walls that may have moisture damage and should be redone before re-tiling. This would assume a basic ceramic tile, nothing too elaborate.
Location is in Canada, Ontario.

Small Bathroom Remodelling Help?

We have a tiny walk- through bathroom (one door in my bedroom, the other in the family room) that my husband and I want to remodel ourselves. Are there any online sites were you can design your own bathroom with a given dimension?