Designer clowns have alot of variation in price because some arnt as good as others. Some snowflakes can be as cheap as 75$ or as much as 150$ because of the pattern and their genetics. Piccaso clowns can range from 60$-250$+ each based on their genetics and pattern. My LFS
's carry alot of designer clowns and they have midnight clowns that I find boring but my wife saw it and fell in love and wanted me to buy it till she saw it was 100$ (thank god she doesnt know what I paid for my current picassos) Just so you know the odds of a midnight clown and a platinum clown pairing up are slim and they may fight. You can expect to pay 200$ for a platinum clown and 100$ for a midnight beings they dont really change in price because they all look the same. The only thing I will tell you to do is make sure you inspect the jaw of the fish before buying it. If it has an underbight it has poor genetics and I would avoid buying it.