10x points equals to approx. 5% discount on shopping.
Also I believe you can combine your 10% monthly discount from Everyday Extra with this booster. Effectively you get 15% discount if you shop above $166.00
Offer:
On every shop in-store or online at Woolworths. Boost your balance with 3x~ points every time you spend $0-$99.99 in one shop, 5x~ points every time you spend $100-$149.99 in one shop, or 10x~ points every time you spend $150 or more in one shop. Offer starts Monday, 03 July and ends Sunday, 09 July.
T&Cs
Offer runs from 00:01 (local time) 03/07/2023 to 23:59 (local time) 09/07/2023. Offer is available at Woolworths supermarkets, Woolworths Metro and Woolworths Online only. Offer is not available on items purchased from Everyday Market from Woolworths, at any Ampol Woolworths MetroGo or via Metro60. This offer is personal to you and will be available only on your Everyday Rewards Card. Registered Everyday Rewards members must boost their offer to participate in the promotion. To ensure your offer has been added to your Everyday Rewards Card, boost your offer before shopping. Any transactions you have made at Woolworths during the offer period before boosting your offer will not qualify for the points booster. ~To collect 3x points, spend $0-$99.99 in one transaction during the offer period. 3x points equals 1 (one) standard Everyday Rewards point and 2 (two) additional Everyday Rewards points. To collect 5x points, spend $100-$149.99 in one transaction during the offer period. 5x points equals 1 (one) standard Everyday Rewards point and 4 (four) additional Everyday Rewards points. To collect 10x points, spend $150 or more in one transaction during the offer period. 10x points equals 1 (one) standard Everyday Rewards point and 9 (nine) additional Everyday Rewards points. Offer can be enjoyed multiple times. If eligible for multiple points boosters, only 1 (one) standard Everyday Rewards point can be collected once for all eligible offers, plus the applicable number of additional points. To enjoy your offer in-store, you must scan your Everyday Rewards Card before completing the transaction at the checkout. To enjoy your offer online at woolworths.com.au, you will need to ensure your registered Everyday Rewards Card number is linked to your Woolworths Online account prior to completing your order. Offer period is based on the local time of the store you shop at in-store or that fulfils your Woolworths Online order. See woolworths.com.au for full terms and conditions and delivery areas. Your points will be loaded to your Everyday Rewards Card within 5 business days after the promotional period. There are a small number of purchases on which you won't collect points. For details, see this FAQ.
I got
Seems pretty similar?