About
Garry Shi is ShopBack's Cashback Expert, the in-house product specialist on how cashback, the wallet, ShopBack PayLater and linked-card programs work across Australia, Singapore and the United States.
The guides are verified inside the ShopBack iOS app, the Android app and the Chrome extension at the version current on the date of writing. They also draw on ShopBack's own product documentation and Garry's daily contact with the cashback teams across the three markets, rather than the idealised flow on the marketing pages.
Areas of focus
Cashback in practice. The full path from clicking through ShopBack to a tracked purchase, how long different merchants take to confirm, what happens when an order is partially refunded, and how to read the dashboard so a missing transaction does not become a missed transaction. Coverage includes online cashback through the website and app, in-store cashback through linked cards, and cashback through partner integrations.
Wallet and withdrawals. How the cashback wallet works once a transaction is confirmed, how withdrawal thresholds and methods differ by market (PayNow, bank transfer, gift cards), and how to time withdrawals against major upcoming purchases instead of leaving the balance idle.
ShopBack PayLater and member features. When PayLater makes sense, how to set up the schedule, where the interest-free terms beat a card charge and where they do not. Coverage of the member tiers, referral programs, ShopBack Pay and the linked-card programs as they roll out across the markets.
Stacking and timing. How ShopBack stacks with credit-card rewards, retailer loyalty programs, sign-up offers and promo codes. What overrides what, what voids what, and how to sequence the click-through and the discount code so neither gets dropped. Practical, not theoretical.
Editorial standards
Every product behaviour described in a Garry guide is verified inside the app or the browser extension before publication, not described from a marketing page. Where regional differences matter (PayNow versus bank transfer for withdrawals, country-specific PayLater terms, linked-card programs only available in one market), the differences are spelled out market by market rather than glossed.
Screenshots reflect the current app version at the time of writing. Every guide gets a date attached. The date_modified field at the top reflects when the flow was last re-walked end to end, which happens at minimum every quarter and ahead of every major app release that touches the behaviour described. When a product change invalidates older guidance, the affected guide is updated and the change is noted at the top.
Garry's guides do not cover the support cases that belong on support.shopback.com (missing cashback recovery, account-recovery flows, payout investigations). For those issues the article points the reader to support directly rather than walking through an internal process. The blog covers how to use the product well; support covers when something has gone wrong.
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.
Editorial team
Garry is the Guides Editor at ShopBack, working alongside:
- Jia, Editor-in-Chief — cross-vertical sale-cycle, cross-retailer pricing and cashback-layer coverage on the external shopping side
Jia and Garry cover complementary surfaces: Jia is the outside-in editor (what to buy, when to buy it, where the cashback layer sits inside a wider purchase decision); Garry is the inside-out editor (how the ShopBack product itself works once a shopper is using it).
Get in touch
Tips, corrections, or product behaviour the guides desk should look at: [email protected]
Corrections are logged in-article with the date and what changed.
Articles by Garry Shi
Shopee Vouchers and ShopBack in Singapore: Can You Use Both in 2026?
Can you use Shopee vouchers and still go through ShopBack Singapore on the same order? Usually yes. Shopee lets you combine one free shipping, one Shopee and one seller voucher per order, and you go through ShopBack before you pay.
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When Are the Biggest Tmall Sales, Like 11.11, in 2026?
Tmall's biggest sale is 11.11 Singles' Day, which falls on Wednesday 11 November 2026 and usually opens with presales in late October. The mid-year 6.18 sale in June is the other big window. Singapore shoppers buy through Tmall Taobao World and should go through ShopBack Singapore before they pay.
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When Are the Biggest TikTok Shop Sales in Singapore, Like 11.11 2026?
The biggest TikTok Shop sales in Singapore usually cluster around the double-date calendar, with 11.11 (Wednesday 11 November 2026) and 12.12 (Saturday 12 December 2026) the two to plan for. Offers live inside the TikTok app, so claim vouchers there and go through ShopBack Singapore before you pay.
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What's the Best Way to Get Shopee Vouchers in Singapore in 2026?
How to get Shopee vouchers in Singapore this month: where to claim platform, free shipping and shop vouchers in the Shopee app, how Shopee Coins, Members Club and ShopeeVIP fit in, when the biggest voucher drops usually land, and why going through ShopBack Singapore is a step before you pay.
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Is the Samsung Trade-In Deal in Singapore Worth It in 2026?
Samsung trade-in in Singapore in 2026: how SwitchUp works on samsung.com/sg, when the trade-in value plus overtrade bonus beats selling your old phone, what you give up, and how to pay less on the new Galaxy.
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Samsung Education Store Discount in Singapore 2026: How Does It Work?
How the Samsung Education Store discount works in Singapore in 2026: who is eligible, how to verify with a school email or Secure Access Code, the up to 15% student discount and other benefits, the terms to know, and how ShopBack Singapore fits when you buy from Samsung.
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Lenovo Legion 5 or 5i: Which Should I Buy in Singapore in 2026?
The Lenovo Legion 5 uses an AMD Ryzen processor and the Legion 5i an Intel Core processor. In Singapore in 2026, pick the Legion 5 for longer unplugged battery life and the 5i for more processor cores, Thunderbolt 4 on some models and wider RTX 5070 choice, based on Lenovo's own spec sheets.
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Is Lenovo a Good Laptop Brand to Buy in Singapore in 2026?
Lenovo is a sound laptop brand to buy in Singapore in 2026 for most people: it has been the world's largest PC vendor by unit sales since 2013, and it covers budget to business to gaming. The thing to know before you buy from lenovo.com/sg is its return policy, which is strict on change-of-mind and custom-built orders.
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What Is the Cheapest Way to Buy From Samsung in Singapore in 2026?
The cheapest way to buy from Samsung in Singapore in 2026 is to use Samsung's own savings that apply to you (SwitchUp trade-in, Samsung Rewards points, Education Store prices, Climate Vouchers on eligible appliances) and go through ShopBack Singapore before you pay on eligible categories such as home appliances, monitors and computers. Samsung Rewards earns points worth 1% to 5% of spend by tier, according to Samsung.
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Luxury Headphones Focal vs Audeze vs Sennheiser: Singapore vs Tokyo vs Grey Market in 2026
Where a Singapore audiophile should buy Sennheiser HD 800 S, Focal Clear MG or Audeze MM-500 in 2026: authorised dealer, Tokyo tax-free or grey market.
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