What is Schluter trim?
Then, what is a Schluter strip?
The schluter strip are metal strips used with tile installations. Most commonly, the schluter strip is used to form the edge of a tile installation. This strip will give a square edge rather than a bullnose tile edge. They can be used as a decorative element within the tile pattern, as a border or divider.
Beside this, how do you finish tile edges?
To give the edge a clean, water-tight finish, place a piece of masking tape one grout joint away from the edge of the last tile. Fill this gap between the tile and the masking tape with a smooth bead of caulk. This will finish the edge without extra tiles.
Yes, the bullnose pieces are expensive and, yes, they do add up. So they simply don't use any bullnose and you're looking at the edge of the tile as the finished product. Worse still is the DIYer tries to grout the edge to make it look more finished.