leza

This is not a tech support question, but I hope the answer may be useful to others in a similar situation.
I am new at creating databases for clients. I have created a database for one client and they are referring another client that is going to be using the database for the same purpose. Although I am sure there will be enhancements that need to be made, it will basically be the same database. I have put in far more hours than my original quote reflects for the first client. Should I offer the second client that database for the same price as the first? Obviously there won't be as many hours dedicated to the second. If I charged them any less it doesn’t seem fair to the first client. I was just wondering if there is an industry standard for this type of transaction. Is that the reason you can offer the same database to so many clients for the same price, because you dedicate so much time up front and then hope to resell to recoup?
Thanks in advance for your input!