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
John Lobb vs Edward Green vs Crockett Jones AU 2026: Bench-Made Shoes
John Lobb vs Edward Green vs Crockett & Jones for Australian buyers in 2026: construction, price bands and where to buy the three classic bench-made makers.
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Mikimoto vs Tasaki vs Tiffany Australia 2026: Luxury Pearl and Diamond Buyer's Guide
For an Australian buyer choosing between Mikimoto Akoya pearl, Tasaki balance pearl and Tiffany fine diamond in 2026, comparing per-piece cost, Sydney and Melbourne flagship coverage, Japan arbitrage, and GST tourist refund mechanics.
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Luxury Perfume Sydney vs Paris vs London 2026: Creed, Tom Ford, MFK
Creed, Tom Ford and Maison Francis Kurkdjian in Sydney vs Paris vs London for 2026: Paris is cheapest for MFK and Creed, Sydney duty-free wins on Tom Ford.
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Hermes vs Chanel vs Dior: Sydney vs Paris vs Tokyo Bags 2026
Hermes vs Chanel vs Dior bags in Sydney vs Paris vs Tokyo for 2026: Paris wins on Chanel and Dior list price, Tokyo on stock and yen gaps, Sydney on Hermes.
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Patek vs AP vs Vacheron: Sydney vs Geneva vs Tokyo 2026
Patek Philippe vs Audemars Piguet vs Vacheron Constantin in Sydney vs Geneva vs Tokyo 2026: how tax refunds and grey-market spreads change the real price.
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Buccellati vs Graff vs Harry Winston: Sydney vs Milan vs NYC luxury jewelry 2026
Buccellati vs Graff vs Harry Winston for Australian buyers in 2026: none has a Sydney boutique, so Milan, London and New York set the price. Where to buy.
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Quiet Luxury in Australia 2026: Loro Piana vs Brunello Cucinelli vs The Row
Loro Piana vs Brunello Cucinelli vs The Row for Australian buyers in 2026: Loro Piana wins on fabric, Cucinelli on Italian craft, The Row on pure minimalism.
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Cash vs GrabPay vs Multicurrency Card in Southeast Asia: AU 2026
Cash vs GrabPay vs AUD-loaded multicurrency for a 2026 Bali-Bangkok-HCMC loop from Australia: fees, coverage, and where each rail wins.
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Euro Cash vs Multicurrency Card vs Tap-to-Pay in Europe: AU 2026
How Australian travellers should pay across Europe in 2026: euro cash, AUD-loaded multicurrency card (Wise, HSBC Global Money), or tap-to-pay contactless. Fees, coverage, tips.
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Japan and Korea Payment 2026: Cash vs Multicurrency Card vs Tap for Australians
Cash, AUD multicurrency card, or tap-to-pay Suica and T-money for Japan and Korea in 2026: how each rail costs an Australian traveller across Tokyo, Kyoto, and Seoul.
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