About
Hejia Zhang is Editor-in-Chief of ShopBack's editorial team, covering consumer pricing, sale cycles, and retailer comparisons across Australia, Singapore, and the United States.
The reporting draws on ShopBack's internal merchant pricing data across thousands of retailers in the three markets, paired with primary sources: retailers' own sale histories, official promotional pages, and government statistics from the ABS, SingStat, and the BLS.
Areas of focus
Sale-cycle timing. Tracking when sales genuinely cut into margin versus when the markdown is theatre. The recurring annual cycle includes EOFY (June, AU), the Great Singapore Sale (June through August, SG), Singles' Day on November 11 (SG and increasingly AU), Black Friday and Cyber Monday (US, with growing AU and SG participation), Boxing Day (December 26, AU), and the major US weekends around Memorial Day, July 4th, and Labor Day.
Cross-retailer pricing. Same SKU compared across the field. In Australia that means Amazon AU, JB Hi-Fi, Harvey Norman, Officeworks, Big W, Kmart, plus Coles and Woolworths for groceries. In Singapore: Lazada, Shopee, Courts, Best Denki, FairPrice, Cold Storage. In the United States: Amazon, Walmart, Target, Best Buy, Costco.
Category playbooks. Running coverage on sneakers, beauty and skincare, consumer electronics, baby gear, travel, and groceries. Each playbook covers what to pay, when to pay it, and where the resale or open-box market sits twelve months on.
Cashback as a layer. How stacked cashback compares against credit-card rewards, store loyalty programs, and coupon stacking. The rules differ meaningfully across the three markets, so the coverage is written region by region rather than one size fits all.
Editorial standards
Every price reference in a Hejia Zhang article traces back to a primary source. That means the retailer's own site, the official sale page, government statistics from the ABS, SingStat, or the BLS, or ShopBack's internal merchant pricing data. It does not mean coupon aggregators, deal-listing sites, or third-party scrapers, none of which are cited.
For category playbooks (sneakers, beauty, electronics, baby gear), observed prices are checked against the actual in-cart price at the retailer during the article's coverage window, not the advertised banner. Travel and grocery pieces are verified against the booking flow or the basket total. Every number gets a date attached. The date_modified field at the top of each article reflects when those numbers were last re-verified, which happens at minimum every quarter.
Recommendations are conditional. "Best buy" is always stated for a particular reader under particular conditions, with the trade-offs at the top of the piece so readers can self-select. Errors get corrected in-article, with the date and the nature of the change noted at the top.
ShopBack receives a commission when readers complete a purchase through a cashback link. This commission does not vary by editorial coverage, and merchants cannot pay for inclusion, ranking, or favourable language. Where a merchant pays a notably higher commission than its peers on a comparable product, the conflict is disclosed inline. Editorial picks are not sold.
Get in touch
Tips, corrections, or merchant pricing data I should look at: [email protected]
Corrections are logged in-article with the date and what changed.
Editorial team
Hejia Zhang leads ShopBack's shopping editorial team and writes cross-vertical pieces on sale-cycle timing, cross-retailer pricing and the cashback layer. The other byline on the team:
- Garry Shi, Cashback Expert — ShopBack product expertise covering cashback, the wallet, ShopBack PayLater, stacking, and member features
Hejia Zhang and Garry cover complementary surfaces. Hejia Zhang is the outside-in editor (what to buy, when, where the cashback layer sits in a wider purchase decision); Garry is the inside-out editor (how the ShopBack product itself works once a shopper is using it).
Articles by Hejia Zhang
Cheapest Day to Book Flights on Google Flights from Australia in 2026
The cheapest day to book flights on Google Flights from Australia in 2026, with AUD fare ranges and day-of-week patterns for Qantas, Virgin and Jetstar.
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True Cost of Owning a Car in Australia 2026: Rego, Fuel, Depreciation
Owning a car in Australia in 2026 costs $11,000 to $18,000 a year once depreciation, fuel, rego and insurance are counted. Hatchback, SUV and EV compared.
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Agoda vs Booking.com vs Trip.com for Australia 2026: Winner by Region
Agoda vs Booking.com vs Trip.com for Australian travellers 2026: Agoda wins South-East Asia and Japan, Booking.com Europe and Pacific, Trip.com China bundles. Plus how to save the most on a Booking.com booking: Genius, promo codes, card rewards and ShopBack.
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Amex Ratio Halved: Is Qantas Frequent Flyer Still Better in AU 2026?
Qantas Frequent Flyer vs Velocity for Australian travellers in 2026: Qantas wins on partner reach and route coverage, Velocity on cheaper domestic seats.
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How to Buy the Cheapest Flights from Australia (2026 Playbook)
A five-step Australia-departure playbook for buying the cheapest flights in 2026: how to compare across Skyscanner, Wotif, Expedia, Agoda and Qantas, when to book versus when to fly, how to spot error fares, and why to go through ShopBack before you pay, a step most Australians miss.
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Optus vs Telstra vs Vodafone vs TPG: Coverage and Price 2026
Telstra covers about 99.7% of Australians and costs more. Optus balances price and coverage, Vodafone competes on price and TPG's Felix undercuts.
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Expedia vs Priceline for Australians in 2026: Which OTA Actually Works Down Under
For Australian travellers in 2026, Expedia wins by default on AU-domestic and most international trips because Priceline's signature 'Name Your Own Price' and 'Express Deals' features are US-only and its AU inventory is thinner. Priceline narrowly wins only when stitching a US layover or US-domestic hotel into the trip. Go through ShopBack AU before you book either one.
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ANZ vs CBA vs Westpac vs NAB Credit Cards 2026: Which Wins
CBA and ANZ lead on flexible points, NAB Rewards on fee-to-points value, Westpac Altitude Black on Qantas. Big 4 credit cards compared for 2026.
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Kmart vs Target vs Big W Australia 2026: Household Basics
Kmart vs Target vs Big W Australia 2026: Kmart wins on price for household basics, Big W on toys, groceries and Christmas, Target on apparel and homewares.
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Cheapest Month to Fly from Australia to Singapore (2026)
An Australia-departure guide to the cheapest month to fly to Singapore in 2026, with AUD return-fare ranges by month from Sydney, Melbourne, Brisbane and Perth, the carrier split across Singapore Airlines, Scoot, Jetstar and Qantas, and the booking-window that beats school-holiday pricing.
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