Stop paying the
gimmick tax.

A third option is placed purely to make one specific pack look irresistible. Spot it: a size whose price sits just slightly under the bigger pack while giving you clearly less product. Take instant coffee — a single-serve sachet might be $0.50 ($5.00/100g), a 50g jar $2.10 ($4.20/100g), and a 100g jar $3.80 ($3.80/100g). The tiny sachet exists to make the jar look like genius. Sometimes the large genuinely is best — sometimes it isn't. Per-unit math decides, vibes don't.

Brand X Chips: 52g for $2, 95g for $4, 147g for $6. Every option works out to roughly $0.038 per gram — identical value regardless of pack size. The bigger bag feels like a bulk deal but delivers zero savings: you just spend more money and eat more chips. Run any family of packs through the Compare tab: if the per-gram line is flat, buy the size you need, not the biggest one.

The sneakiest raise you'll ever pay. Price stays the same, pack quietly drops from 100g to 90g. Nothing changes at the counter, but your cost per gram jumped 11%. Cereal, coffee, snacks, detergent — serial offenders. Use Shrink Check when a pack feels lighter than memory; we quantify exactly how hard the hike hit.

Free extra is added on top of a bigger base, so the saving shrinks: true % off = extra ÷ (100 + extra) × 100.

• 25% extra free = 20% off
• 50% extra free = 33.3% off
• 100% extra free = 50% off

"25% extra free" on the big pack sounds great — but that's only 20% off. Compare it against a straight "20% off" sticker on the smaller pack. The louder offer lost.

"Combo save $5!" — against what baseline? Add the shelf prices of the individual items yourself. Take a snack + drink combo: listed as $9.99, individual prices total $10.50. That's only 5% off. Under ~5% combined saving, the combo exists to move slow stock, not to reward you. A good combo saves 15%+. Bundle Check does this arithmetic before the combo sign does it to you.

$19.99 reads as "one-something" in your head while being effectively $20. That's why almost every retail price ends in 9 or 99. Left-digit anchoring is the oldest trick in retail. Defense: round to the nearest whole number when budgeting, and always compare per-unit — decimals don't do psychology.

The struck-through $29.99 may be a price nobody ever charged — invented to make $19.99 feel like charity. Verify with Claim Check using the original price, not the sticker's "was" price. Many staples sell below the marked price at discount stores.

It's price divided by quantity — per gram, ml or piece. A 52g pack for $2 is $0.038/g, and a 147g pack for $6 is also $0.038/g. Same unit price, bigger spend. LootLens normalizes every pack and ranks them instantly so you never fall for the size trick.

Actual % = (original − sale) ÷ original × 100. If a sale says 40% off but the math says 25%, the claim is inflated. Claim Check runs this instantly, including the misleading "extra free" style offers.

Same price, smaller pack — a cereal box went from 500g to 425g at the same price and you silently pay 17% more per gram. Shrink Check quantifies the hidden hike from old vs new pack details.

Completely free, no account. Comparisons live only in your browser's local storage — nothing ever leaves your device.