From the 13th to the 15th May 2014 Bulk Barn are running a different kind of promotion to their usual $3 off printable coupon.
This offer is in store only I believe (I haven’t spotted it being promoted on their website yet at any rate). Simply spend $15+ at one of their stores (before taxes) to get your free $5 gift card. I found a link which describes the offer is a little more detail here.
Apparently the gift card must be redeemed on a future purchase. But I assume a future purchase would simply mean your next purchase. And of course it is limited to one gift card per person per store visit.
The number of gift cards are limited and purchases to qualify for the card exclude gift cards themselves. So customers have to actually purchase products in store.