← Back to app
📚 DealCheck Blog
Price comparison tips, promo math, and money-saving strategies for every grocery trip.
Also available in ภาษาไทย
Buy 1 Get 1 vs 40% Off — Which Is Actually Better?
The math behind every supermarket promo type — BOGO, Buy 2 Get 1, and straight % off — with a quick-reference table and real examples.
7 Tips for Smarter Supermarket Shopping
Techniques real frugal shoppers use every day — from reading price tags and spotting red-flag promos to choosing the best time to shop.
Why Multi-Packs Are Sometimes More Expensive Than Singles
Supermarkets count on you assuming bulk = cheaper. In 30–40% of cases it isn't. Here's the pricing strategy behind it and how to beat it.
Bulk Buying vs Single Items — Does Bigger Always Mean Cheaper?
Many assume buying in bulk always saves money — but unit price tells a different story. Here's when bulk wins and when it doesn't.
What Is Unit Price? The Beginner's Guide to Smarter Grocery Shopping
Unit price is the single most useful number in any supermarket — and most people ignore it. Learn what it is and how to use it instantly.
Store Brand vs Name Brand — Is the Price Difference Worth It?
Private label products cost 20–40% less, but how different are they really? A guide to which products to buy store brand and which ones brand matters.
Are Supermarket Flash Sales Actually Worth It? How to Tell
A red "30% off" tag doesn't always mean a good deal. Learn the most common flash sale traps and how to verify if a discount is genuine.
How to Set a Monthly Grocery Budget and Actually Stick to It
A practical budgeting framework with a sample ฿4,000/month breakdown for two people — and tools to track it without spreadsheets.
Fresh Market vs Supermarket — Where Should You Buy Your Groceries?
Price comparison across 6 common items plus a hybrid strategy that gets you the best of both worlds.
Cooking Oil: Small Bottle vs Large vs Gallon — Which Size Is the Best Value?
Unit price comparison across all cooking oil sizes, with advice on which size fits which household type.
Supermarket Layout Tricks Designed to Make You Spend More
Every supermarket is engineered to slow you down and trigger unplanned purchases. Learn the 5 key design tactics and how to counter each one.
Buy X Get Y Free — Are Supermarket Bundle Deals Worth It?
We analyse 4 bundle deal types with real maths, plus a 3-question framework to decide whether any bundle is genuinely worth buying.
Online Grocery Shopping vs In-Store — Which Is Actually Cheaper?
Price comparison across 5 common items online vs in-store in Thailand, with a clear guide on which channel wins for which product category.
Buying Seasonal Produce in Thailand — How Much Can You Actually Save?
A month-by-month Thai fruit calendar, in-season vs off-season price comparisons, and freezing tips to lock in savings year-round.
Near-Expiry Discounts (50% Off) — Should You Buy Them?
A practical guide to near-expiry grocery deals: best before vs use by explained, which items are smart buys, and which to avoid entirely.
Makro/Lotus's Online vs In-Store — Where Are Prices Actually Lower? (10 Items)
Delivery fees change the whole equation. We compared 10 common groceries across both channels so you know exactly what to buy where.
Cheapest Protein Per Gram in Thailand: Eggs vs Pork vs Tuna vs Tofu
We calculated cost per gram of protein for 7 common Thai ingredients. The results might change how you shop.
Lotus's vs Big C vs Makro — Grocery Price Comparison Thailand (2026)
No single chain wins on everything. Here's which chain is cheapest for which product type, and the mixed strategy that saves the most.