Just got this in email. Pretty good for someone looking to get an iPhone in the near future.
Search result of iPhones currently sold by JB Hi-Fi
Offer available to port-in mobile service (excluding JB Upfront/Prepaid, The Good Guys Mobile & Broadband, Telstra & Boost) and new customers only. The $1200 off the current ticketed price of any iPhone (referred to as the “JB Hi-Fi Voucher” in the Telstra Terms and Conditions available at www.telstra.com.au/jbhifi-mobile-terms) replaces the dollar value of the Voucher in the Critical Information Summary and will be applied instore after connection approval by Telstra. If you cancel or move to a lower cost/different plan then you must pay a Voucher Repayment Fee to Telstra pro-rated against the remaining months of your plan’s minimum term. This offer is not available in conjunction with any other JB Hi-Fi mobile or broadband offer. Limit of 3 offers per customer, and only one offer can be applied per device.

 
    








 
 















So how much we have to pay if cancelling on day 1?