the price-per-unit x-ray machine

Cheapest Beverages Staples Per Unit

As of July 2026 · 6 staples tracked monthly across Amazon, Walmart & eBay

The best value per unit on every beverages staple we track, ranked by what things actually cost — not what the shelf tag wants you to feel.

Cheapest right now

StapleBest valueRetailervs last monthPack trap?
Protein Shake11¢ per fl ozAmazon—⚠️ yes
Electrolyte Powder10¢ per ozAmazon——
Energy Drink9.4¢ per fl ozAmazon——
Zero Soft Drink3.7¢ per fl ozAmazon——
Soft Drink0.7¢ per fl ozeBay——
Sparkling Water2.5¢ per fl ozWalmart—⚠️ yes

Full leaderboards, 12-month trends and the pack-size math live on each staple's page.

Quick answers

Is the biggest pack always the cheapest way to buy beverages staples?
Not this month. 2 of the 6 beverages staples we track had a pack-size trap in July 2026 — the largest pack was not the lowest cost per unit. Check the per-unit math before assuming bulk wins.
How often are these numbers updated?
Monthly. This page was generated on July 14, 2026 from live Amazon, Walmart and eBay listings. Prices move between updates, so use the live PriceXray search for today's numbers.

Explore

As an Amazon Associate I earn from qualifying purchases.

Links marked (paid link) can earn PriceXray a commission. It never changes the price you pay.

Prices checked July 14, 2026. Prices change fast — treat this page as a map, not gospel, and YMMV. For today's numbers, run a live search.

a TrueNor.AI product