Hello,
Per the site,
Each applicant is eligible to receive up to 500 free microchips for any clinic they would like to run for the challenge. The only requirement is that they commit to registering all the chips with the Fi Nano registry and the event is also open to dogs (a free-for-life registry for any type of microchip). Just email josephine@tryfi.com to get set up!
Hope this helps,
JJ Hendrickson