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
Japan and Korea 2026: Cash vs Multicurrency Card vs Suica for SG
For a Singaporean on a two-week Japan and Korea trip in 2026, cash, a SGD-loaded multicurrency card, and Suica or T-money tap payments each cover a different share of spend. Here is what actually saves money.
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YouTrip vs Revolut vs Wise vs Instarem: SG 2026 Multi-Currency Cards
A structured 2026 four-way comparison of Singapore's most-used multi-currency travel cards: YouTrip, Revolut SG Standard, Wise SG, and Instarem Amaze. Side by side on wholesale FX rate mechanics, weekend markups, ATM withdrawal free tiers and post-tier fees, spend caps, and when each card wins so you can pick the right plastic for your next trip.
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HSBC Revolution vs UOB Preferred Platinum vs Citi Rewards: SG 2026 Mid-Tier Cards
A structured 2026 comparison of Singapore's three most popular no-annual-fee-with-spend mid-tier rewards cards. HSBC Revolution (contactless and online, KrisFlyer conversion route), UOB Preferred Platinum Visa (rebranded to UOB Preferred Visa Card from March 2026), and Citi Rewards Visa (migrating to the Mastercard variant from October 2026) side by side on earn rates, category caps, dining and online positioning, miles versus cashback pivot, and when each card wins so you can pick the right mid-tier plastic for your situation.
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UOB KrisFlyer vs DBS Vantage vs Amex KrisFlyer Ascend: SG 2026
A structured 2026 comparison of three popular Singapore miles credit cards. KrisFlyer UOB, DBS Vantage, and American Express Singapore Airlines KrisFlyer Ascend side by side on annual fee, waiver rules, miles-per-dollar earn rates, welcome and renewal bonuses, lounge access, and when each card wins so you can pick the right miles card for your spend pattern.
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DBS Multiplier vs UOB One vs OCBC 360: Realistic Yield Singapore 2026
DBS Multiplier, UOB One and OCBC 360 compared profile by profile for Singapore savers in 2026: which account pays the highest realistic yield for your spend.
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6 Profitable Quarters: Why It Matters for a Singapore Cashback App
ShopBack has posted six consecutive profitable quarters. Here's what profitability actually means for a cashback platform, why it is rare in the rewards space, and why it matters for Singapore members.
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My Monthly ShopBack Payout Hit S$500. Here's How (Singapore Playbook)
A Singapore-based ShopBack member breaks down how monthly payouts add up to S$500 through everyday earning across retail, travel, dining, groceries, and digital services. No hacks.
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ShopBack Pay Singapore Now Has an MPI Licence. Here's What It Actually Means for You
ShopBack Pay Singapore was granted a Major Payment Institution licence by MAS on 30 June 2025. Here's what the licence covers, why it took two years, and what it means for members using ShopBack in Singapore.
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Mid-Autumn 2026 Mooncakes: Where to Preorder for Best Price
Mid-Autumn 2026 falls on 25 September. Singapore hotel mooncake preorders discount hardest before end August, bakery boxes sit mid-range, supermarkets drop last.
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Open Electricity Market Singapore 2026: Geneco vs iSwitch vs Sembcorp vs Union Power
Geneco wins on flexibility and green plans, iSwitch on simple tariff discounts, Sembcorp on stability and Union Power on fixed-rate promos. Singapore OEM 2026.
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