You'll need to be a member of the subway eat fresh club first. Once you are go to the linked page and create your own version of an avocado sub. Once done you'll get a voucher for a freebie avocado side next time you buy a sub.
Its obvious isn't it..... ! Through Buckscoop Australian consumers can freely share deals, vouchers or promo codes, bargains and freebies they think are worth mentioning. At Buckscoop you're participating in helping others to share in the good deals that you find and of course the share in those others find as well.