It is a very simple classic design made from very stretchy fabric that is cut with raw (unfinished) edges that do not fray. The dress is basically a circular skirt sewn onto a waistband with two very long straps that wrap around the bodice to create many different styles.
My price to make up the classic knee length version is $45 - I know, its super cheap! but bear in mind that these frocks use a lot of fabric so fabric costs are often more than the dressmaking. I also offer bandeau's (boob tubes) for $20 to provide extra coverage for some of the wrapping styles. I can make up a full length version with either a circular skirt or A line one for $55 / $60 for added gathers into the skirt at the waistband.
For more pictures do a quick Google search - this classic style has exploded all over the internet recently and if you would like more information from me about fabric types, prices and amounts please email me at email@example.com.