Coles has 10% off $100 & $250 Mastercard gift cards starting on the 15th June to 21st June. Additional purchase fees apply ($5 or $7 depending on the card).
Mod Edit: Updated thumbnail/link with in-store advertisement - Credits to randoom
Offer only applies to $100 and $250 Coles Mastercard Gift Cards. 10% discount will be applied to the value of the card including the applicable activation fee. Total cost for $100 gift card is $94.50 ($90 for card and $4.50 for activation fee) and for $250 gift card is $231.30 ($225 for card and $6.30 for activation fee). Limit 5 Gift Cards per customer. Offer valid only in store at Coles Supermarkets (excludes Coles Online, Coles Express and purchases via giftcards.com.au), subject to store availability. Excludes $50 Coles Mastercard Gift Cards. While stocks last, no rainchecks. Please note Coles Mastercard Gift Cards will have a minimum 4 hour activation delay. Coles Mastercard Gift Cards cannot be used to purchase any other gift card sold at Coles. Offer valid from 15/6/22 to 21/6/22. Refer to individual gift card for terms and conditions.
Dammit, I have quite a few unactivated purple Coles Mastercards I was planning to use when this deal came around again.