In most aisles, bigger is cheaper per litre. In Lithuania's Ariel shelf, it's the opposite. A 1.8-litre bottle of Ariel Color is €10.75. The 2.7-litre "family" version runs €24.99 — 2.3× the money for 1.5× the detergent.
What the data shows
Across Ariel's liquid range in Lithuania, the 1.8-litre pack is the best-value bottle on the shelf. The smaller 1.35-litre runs more expensive per litre. So does the bigger 2.7-litre family pack.
| Ariel pack | Pack price | €/litre | €/wash |
|---|---|---|---|
| 1.35 L Fresh Air (30 washes) | €10.85 | €8.04 | €0.36 |
| 1.8 L Color (40 washes) | €10.75 | €5.97 | €0.27 |
| 1.8 L Mountain Spring (40 washes) | €10.75 | €5.97 | €0.27 |
| 2.7 L Color (60 washes) | €24.99 | €9.26 | €0.42 |
The 1.8-litre is 35% cheaper per wash than the 2.7-litre "family pack". That €0.15 gap per wash quietly accumulates — €15 a year for a household that washes twice a week, just from reaching for the wrong bottle on the same shelf.
The same counter-intuition doesn't hold elsewhere. In Slovenia, the 2.7-litre Ariel sits at €11.63/L and the 3.87-litre at €10.15/L — not huge volume savings, but the expected direction: bigger buys cheaper per litre. In Lithuania that logic breaks.
Ariel — cost per wash in Lithuania (€)
| Pack | € per wash |
|---|---|
| 1.8 L Color (40 washes) | 0.27 |
| 1.8 L Mountain Spring (40 washes) | 0.27 |
| 1.35 L Fresh Air (30 washes) | 0.36 |
| 2.7 L Color (60 washes) | 0.42 |
Source: Sivix, Lithuania, Mar 2026
Why this happens
Pack-size pricing reflects two things: what the manufacturer charges the retailer, and how retailers then price each size on the shelf. In Lithuania, the 2.7-litre Ariel sits flat at €24.99 across every scrape in our data — fixed, no promotion. The 1.8-litre is flat at €10.75. The big pack is set as the premium tier; the medium pack is the "value-size" signal.
Most shoppers assume the bigger bottle is the bargain. The retailer knows that, and prices accordingly: the 2.7-litre is the halo, not the deal. The real value sits in the middle.
What it means for you
Before reaching for the biggest bottle, check the per-litre label. In Lithuania's Ariel aisle, washing twice a week with the 1.8-litre costs about €28 a year; the 2.7-litre "family" pack does the same laundry for €43. That's a €15 tax on the bulk-pack assumption, for the exact same detergent. The biggest bottle isn't a bulk discount here — it's the house's favourite product.
Data source: Based on 48 Lithuanian Ariel liquid observations across 5 SKUs scraped in March 2026 (single scrape day). Data reflects real shelf prices as reported at time of purchase.
Products referenced in this story
Real shelf prices as reported by Sivix contributors. Tap any product to see current prices.
