Very simple solution: Don't make typos.
When you are spending 50 gold, is it too much to ask that you double-check your spelling? When you, say, found a company and make a typo in the company name, it's also pretty expensive to change it later on.
Hah! That actually happened to the founders of the company I used to work for—not with the company I was working for then, but with one of the other (basically shell) corporations they owned.
