Looks very similar to the Zozu change taught by Doc Docherty, with a small variation on the replacement. If you haven't seen the Zozu change, check it out at Vanishing Inc.
the zoso change requires you to change the card back to the original. this looks much cleaner and you end clean. I have learnt the zoso and that only makes me want to learn this more!! I say go for it and if you dont get a deal at E maybe you could get it published in a mag or on reel magic and at least get some bragging rights. (assuming marlo hasn't already invented it )
I support Mr.tokyo-sama. The concept has been explored before by Jerry Andrus ( The Amazing Change ), exact change has been published by Peter Duffie. Check this out: http://www.youtube.com/watch?v=o9pR4PEjm9w
In other words, re-publishing wont be a very ethical thingy.However, this is not to let you down. Congrats on creating this excellent change, be happy about it. Reinventing the wheel is very common in our art, and while can be annoying sometimes, but its never a negative thing.
I agree with some of the other guys, I don't think E would attempt to market something that is so close to something else.
Plus, I don't know, something about the change isn't sitting right with me. The initial change is cool, but then your hand is just left sitting there, killing the climax with the cleanup. What makes this change any smoother than an Erdnase?