Pretty fan!
Shrimp - per Live Aquaria; $9.99 (
http://liveaquaria.com/product/prod_...35&pcatid=1135)
Fan - per LA; ~$30 (
http://liveaquaria.com/product/aquar....cfm?c=597+601) for 6"-12". So since yours is about 3-4" and 4" tall I am guessing $20.