Sticker Shock strategy guide
Guessing old prices feels like trivia, but it is really estimation, and estimation is a skill. Economists, historians and anyone who has argued with a grandparent about the price of a movie ticket use the same small toolkit: a sense of how much money itself has changed, a feel for which things got cheaper or pricier than everything else, and a few reference prices to anchor against. This guide gives you that toolkit.
1. Start from today and work backward
The easiest anchor is a price you know right now. Most people have a rough idea what a dozen eggs, a gallon of gas or a loaf of bread costs today. Start there and shrink it for the year on the card. That is far more reliable than trying to remember a price from decades ago.
2. Use the inflation multipliers
Overall consumer prices have risen steadily. Using the Consumer Price Index behind this game, a typical basket of goods cost about 3.9× as much in 2025 as it did in 1980, about 2.5× as much as in 1990, about 1.9× as much as in 2000 and about 1.5× as much as in 2010. To estimate an old price, divide today’s price by the multiplier for the nearest decade. If a pound of an item costs about $4 today, a reasonable first guess for 1990 is $4 divided by 2.5.
Treat that number as a starting point, not the answer. The multipliers describe the average of everything people buy. Individual items wander away from the average, sometimes by a lot, and knowing which way they wander is how good players climb from 300 points to 450.
3. Know the items that beat inflation
Some goods got relatively cheaper because farming, shipping and manufacturing became more efficient. Staples produced at enormous scale, such as sugar, flour, rice and many fresh fruits and vegetables, often rose more slowly than prices overall. For these items, shrink today’s price by less than the full multiplier: the old price was higher than simple inflation math suggests.
4. Know the items that outran inflation
Other items grew more expensive than the average. Beef has tended to climb faster than prices overall, and some prepared snacks have seen long stretches of steep increases. For these, shrink today’s price by more than the multiplier: the old price was lower than you might expect. Coffee has swung above and below inflation. It was already expensive in 1980 and has risen less than prices overall since then, but measured from most later years, and from every year since 1998, it has outpaced inflation, with sharp jumps in 2011 and again in 2025.
5. Respect the volatile ones
Energy prices swing with world oil markets and can double or halve within a few years, so gasoline, diesel and heating oil reward knowing roughly what was happening in that era. Gas was cheap through much of the 1990s, spiked in the late 2000s and rose sharply again in the early 2020s. Eggs are volatile in a different way: outbreaks of bird flu can shrink flocks and push prices up quickly, then prices fall back when supply recovers. When a volatile item shows up, adjust your guess for the conditions of that specific year rather than the long-term trend.
6. Watch the units
Every card names its unit, and the unit matters more than it looks. Bread, meat, cheese and produce are priced per pound. Milk and fuels are per gallon, strawberries per 12-ounce pint, and electricity per kilowatt-hour, which is only a fraction of a dollar. A loaf of bread usually weighs more than a pound, so the per-pound price is lower than the shelf price you remember. Reading the unit carefully prevents the biggest misses.
7. Use the slider’s scale
The slider runs on a stretched scale, so cheap and expensive items get the same room to move. Its ends are rounded, generous limits, such as 50 cents or $5, placed well beyond anything the item has cost in any year, so they never reveal its record low or high price. The middle of the slider is a sensible neighborhood for the item across all years. Drag to the region that matches your estimate, then fine-tune the number by typing.
8. Think in percentages
Scoring measures how far off you are as a percentage, so a 20-cent miss on a 50-cent item is a disaster while a 20-cent miss on a $6 item barely matters. When you are unsure, it is better to be slightly off on the right order of magnitude than precise on the wrong one. If you cannot decide between two guesses, pick a value between them: the scoring rewards staying close more than it punishes small errors.
9. When to take a hint
A hint reveals a range that contains the real price, spanning from about 23 percent below to 30 percent above it. It is most valuable on items you have never bought, such as heating oil, or in years when a volatile item was behaving unusually. Taking a free hint marks your shared result with a light bulb, so save it for the cards that really stump you.
10. Learn from the reveal
Every reveal shows the old price, the same amount in today’s dollars and the most recent price. If the today’s-dollars figure is higher than the current price, the item became relatively cheaper; if it is lower, the item outran inflation. Spending a few seconds on that comparison builds exactly the intuition the next puzzle will test.
Practice makes the difference
Unlimited mode is the fastest way to build a feel for relative prices across items and decades, and the archive lets you replay earlier daily puzzles. Remember that these are national averages for learning and fun, not financial advice or a guide to what any single store charged.