Difficulty: I can't say it is easy but it isn't difficult.
Effect: This is a card control. Very smooth and fast. One of the best controls I've ever seen! Check this link:
http://www.youtube.com/watch?v=bB0sesOGevQ" target="_blank
Limitations: None. It is improptu. Be careful with the angles...
Price: $6.95 (theory11.com)... This is almost free!!! You get what you pay for.
Method: This is a new version of a known move... Outstanding.
Angles: You can't perform it surrounded... Great for small groups...
Overall: Amazing and useful sleight of hand...