Spend $100 each week for 4 weeks and receive bonus 15000 Woolworths Rewards Points (Worth $75).
Targeted offer, see if you get one in your inbox.
(Thanks mods!)

Edit: According to comments, the offer differs a lot by account.
Spending amount starts from $30 to $150, Bonous Point varies from 3,000 to 20,000.

Full terms & conditions

*Promotion runs from 31/01/19 to 03/03/19 at Woolworths supermarkets and Woolworths Metro (in all cases excluding Tasmania) and Woolworths Online. This offer is personal to you and will be available only on your Woolworths Rewards card. Registered Woolworths Rewards members must activate their offer to participate in the promotion. To ensure your offer has been added to your Woolworths Rewards card, you must activate your offer at least 2 hours before shopping in-store or online. Activation closes 23:59 AEDT Thursday 07/02/19. Any transactions you have made at a Woolworths supermarket in the promotional week before activating your offer will not be counted towards the qualifying amount. Spend at least $100 (the qualifying amount) in one or more transactions in-store or online at any participating Woolworths supermarket during each of the 4 designated weeks of the promotion and scan your registered Woolworths Rewards card at the checkout to earn 15,000 bonus Woolworths points. To redeem 15,000 bonus points online at woolworths.com.au you will need to ensure your registered Woolworths Rewards card number is linked to your online account. See woolworths.com.au for full terms and conditions and delivery areas. For all Woolworths online transactions, orders need to be delivered or picked up by 23:59 on Sunday each week to qualify for that weeks applicable weekly spend. Your bonus points will be added to your account within 3 business days after you have completed your Week 4 qualifying spend amount. Qualifying amount excludes withdrawal of cash, delivery charges and Delivery Saver items, internet cafes, purchases of smoking/tobacco products and accessories, liquor, Gift Cards (including iTunes), mobile recharge, Woolworths Mobile, travel cards and tickets, woolworthsflowers.​com.au, Carpet Care, Donations, lottery products and Pre-order Kiosks.