How to Keep a Simple Canadian Staple Price Book (So You Know a Real Deal)

A staple price book helps Canadian shoppers tell a real deal from a flyer headline. List the 15 to 25 groceries you buy most, write down the unit price (per kilogram, litre or 100 g) each time you see it at your stores, and mark the lowest price you have seen. That becomes your stock-up price: when a staple hits it, buy extra if you can store and use it before it spoils; otherwise buy only what you need.

Set up the price book

1. Choose your staples: pantry (rice, pasta, oats, canned tomatoes, flour), protein (eggs, chicken, beans), dairy, frozen vegetables, household items.
2. Pick a tool: a spreadsheet, a notes app or a small notebook.
3. Add columns: item, size, unit price, store, date, regular or sale.
4. Record prices from receipts, flyers and shelf tags for a few weeks.
5. Mark the lowest regular price and the lowest sale price for each item.

A simple template

Use unit prices

Package sizes change, and a smaller package at the same price is a price increase. Comparing per kilogram, litre or 100 g keeps the comparison honest. Canadian shelf tags often show a unit price, but the unit can differ between items; convert to one unit in your book.

Use it with flyers, price matching and points

When the weekly flyer arrives, compare the sale price with your book. If it beats your stock-up price, it is a real deal for you; if not, skip it or buy just what you need. Price matching and loyalty offers can lower the effective price; record the price you actually paid after points only if you would earn them anyway.

Converting prices to one unit

Shelf tags in Canada may show unit prices per 100 g, per kg, per 100 mL, per L or per unit, and different products on the same shelf can use different units. Pick one unit per item in your book and convert. Divide the price by the package size in grams and multiply by 1,000 for a price per kg, or by 100 for a price per 100 g.

Step by step: a weekly 10-minute routine

1. When the flyers come out, open your price book next to the flyer app.
2. Highlight any staple whose sale price is at or below your stock-up price.
3. Check your pantry and freezer space before deciding how much to buy.
4. Add those items to your list with the quantity and store.
5. After shopping, enter the prices you actually paid from the receipt.
6. Every few months, update your stock-up prices if regular prices have moved.

How much to stock up

Buy enough to last until the next likely sale, not a year's supply. Many staples go on sale every few weeks to every couple of months, and your book will show the pattern. Check best-before dates and storage needs: pantry staples keep well, frozen vegetables and meat need freezer space, and dairy and produce need to be used quickly. Stocking up only saves money if nothing is thrown out.

A price book also helps with price matching. At stores that match competitors' advertised prices, your book tells you which flyer prices are worth matching and which are not a real saving for you.

Common mistakes

• Tracking too many items and giving up after a few weeks.
• Comparing package prices instead of unit prices.
• Buying a large quantity at a 'sale' price that is above your stock-up price.
• Stocking up on items that spoil before you use them.
• Forgetting to update the book when prices rise overall.

Example with made-up inputs: is it a deal?

These numbers are an example with made-up inputs, not current prices.