Disappointing to say the least. Admin dictates what's required for a challenge, which most of the time requires using large amounts of diamonds for one piece. Some players purposely score bad designs over good ones, so buying them is a waste. Some designs require more diamonds than you get in an entire week. And just to add insult to injury, the prizes (which dictate obtaining a score higher than 4.0,) are usually some of the cheapest pieces available. It's a rip-off