There is a version that does not use a gimmick by CK called The Deep.
For the gimmick you are looking at spending $30 for a low end gimmick all the way to $200+ for a full set of Morgans if you so choose.
I bought a Walking Liberty Shell From Jaime Schoocraft for this routine and others that I do and paid $60 for just the gimmick.
I bought a Johnson's Morgan shell that they specially made for me that cost $80. The shell from Johnson's Products has served me well since 1992.
If you want to have some fun and get a great trick get the Hoping Halves from Johnson's ...you will get the gimmick for both a Half and a Englich Penny. Cost aroud $45 or so. Well worth the price.
Later,
Snorri