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Amazon US · ranked by real cost per unit

Stop paying for the packaging.

We compute the real price per unit — per litre, per page, per diaper, per ml — across every category you rebuy, so you compare true value instead of the sticker price.

OutletPicks is an independent US Amazon price-comparison site that ranks everyday products by their real cost per unit — per ml, per fl oz, per page, per diaper, per quart — from prices re-checked on a rolling cycle, so a bulk pack and a travel size line up on the same scale.

412+ brands across every category · ranked by real cost per unit

Prices checked Jul 23, 2026

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Hottest right now

Duracell Coppertop AAA Batteries with Power Boost Ingredients

cost / battery$0.75
you pay$6.00

🔋 Batteries · 🔥 Popular · ranked by real cost per unit

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Duracell Coppertop AAA Batteries with Power Boost Ingredients

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Fragrance$ / ml · 1541 trackedSkincare$ / ml · 1468 trackedHair & body$ / fl oz · 831 trackedBody care$ / fl oz · 187 trackedMakeup$ / ml · 186 trackedCoffee pods (K-Cups)$ / pod · 168 trackedNail polish$ / ml · 142 trackedBatteries$ / battery · 97 trackedDog treats$ / lb · 90 trackedProtein bars$ / bar · 78 trackedShave & beard$ / fl oz · 74 trackedDeodorant$ / oz · 70 trackedTrash bags$ / bag · 62 trackedBaby care$ / diaper · 56 trackedDish soap$ / fl oz · 51 trackedToothpaste$ / oz · 49 trackedMotor oil & fluids$ / quart · 46 trackedPrinter ink & toner$ / page · 46 trackedLaundry detergent$ / load · 44 trackedPet food$ / lb · 42 trackedShaving & grooming$ / cartridge · 41 trackedCat litter$ / lb · 38 trackedToilet paper$ / 100 sheets · 37 trackedPaper plates$ / plate · 35 trackedDishwasher pods$ / pod · 31 trackedFood storage bags$ / bag · 30 trackedOffice & copy paper$ / sheet · 29 trackedPaper towels$ / 100 sheets · 23 trackedBath & soak$ / fl oz · 12 tracked

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Tracked since we first listed them — these fell the most. Each card shows when we last checked it.

📘 Buying guides

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Cost per unit, not just price

We do the math: divide by litres, millilitres, diapers, or pages.

Real prices, not MSRP

Last-seen prices from the retailer — no inflated “was” prices.

Transparent, not opinion

Rankings are pure arithmetic from real prices and pack sizes. The methodology is public.

The cost-per-unit ranking is arithmetic, not opinion: we take each listing’s last-seen price and divide it by the unit that matters for its category — litres, millilitres, diapers, pages, cartridges — so two products in different pack sizes line up on the same scale. That single figure — what the thing actually costs per unit — is how every grid and category ranking is sorted. We do not invent prices; each row reflects the data we recorded from the retailer.

How it works

Three steps from a shelf full of prices to the one that's actually cheapest per unit.

  1. 01

    We pull the real price

    Every listing comes in with its true US Amazon price — pack size, count, and volume included, not just the number on the box.

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  2. 02

    We divide by the unit that matters

    Price ÷ the unit for its category — per quart, ml, diaper, page, kg, or cartridge — then rank cheapest-per-unit first. Bulk tricks and big-bottle markups have nowhere to hide.

    See today's deals
  3. 03

    Continuously re-checked, never paid for

    We re-check every price on a rolling cycle — and each deal shows the date we last checked it — so the ranking stays honest. Links are affiliate — we earn a small cut — but no brand can pay to rank higher.

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Why we exist

Sticker price hides the real cost. Cost per unit surfaces it.

We compute what you actually pay per unit that matters — per quart, per ml, per diaper, per page — across every category you rebuy, with the pack size and the real unit price on the same row. Rankings are arithmetic, not opinion — the cheapest real cost per unit wins. No paid placement.

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