The prices did range from about $15 to over $45, depending on the size and intricacy of the design. I got one on my hand, and found that because I was using lotion on my hands it didn't last as long as it probably could have. (My temp tattoo of tinkerbell lasted longer on my ankle).
The lady that did mine also did it freehand. She had you come back after about 30 minutes to put lemon juice on it. They recommend you leave the paste on as long as possible, but once it has dried and then it starts to flake off, that is fine.
If I do one again, it will probably be on my ankle. The lady that did mine had some very pretty designs.
WDW Poly Princess - that one is pretty.
Castillo Mom, henna is only one color. If you look online, they advertise a very black color, but the black can damage your skin. The brown is the natural and more commonly used color. It can be very pretty. WDW Poly Princess's sample looks black because it still has the paste on it. Once the paste comes off, it is a lot lighter brown color, almost rust color. WDW would not let their henna artists use something that is damaging to someone.