Fix unit price percentage: 16.2% → 16.1% (and trailing '16%' → '16.1%')

(P/15.5) / (P/18) - 1 = 18/15.5 - 1 = 16.1%, not 16.2%. 
Addresses CTO review request on PR #38.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

content/marketing/blog/shrinkflation-consumer-faq.md

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----
-title: "Understanding Shrinkflation: A Consumer's FAQ"
-slug: shrinkflation-consumer-faq
-status: draft
-version: 1.0
-last_updated: 2026-03-22
-description: "Shrinkflation is how brands quietly raise prices by giving you less product for the same money. Here is what it is, why it is legal, and how to detect it."
-tags: ["shrinkflation", "consumer-faq", "grocery-prices", "price-transparency", "unit-price"]
-series: "The Shrinkflation Files"
-series_part: 0
-target_publish: 2026-04-01
-target_keywords: ["what is shrinkflation", "shrinkflation examples", "why did my product get smaller", "is shrinkflation legal"]
----
-
-# Understanding Shrinkflation: A Consumer's FAQ
-
-You notice it at the grocery store: the cereal box looks smaller. The chip bag seems to have less air in it. The pasta salad you loved now fits less in the container. But the price is the same — or higher.
-
-That is shrinkflation. Here is what you need to know.
-
----
-
-## What Is Shrinkflation?
-
-Shrinkflation is the practice of reducing the size or quantity of a product while keeping the price the same — or raising it. The per-unit cost increases without the packaging change being obvious at first glance.
-
-It is different from inflation. Inflation raises prices for the same product. Shrinkflation keeps the price the same for a smaller product. Both cost you more per ounce, per gram, or per use.
-
----
-
-## Is Shrinkflation Legal?
-
-Yes. Shrinkflation is legal in the US and most markets. Manufacturers are required to state the net weight or count on the packaging, but they are not required to announce when a product gets smaller. There is no federal regulation specifically banning shrinkflation.
-
-Some regulators have begun studying the practice, and there have been proposals for mandatory price-per-unit labeling at the shelf level, but no binding rules exist as of 2026.
-
----
-
-## What's an Example of Shrinkflation?
-
-Common examples from 2020–2025:
-
-- **Cereal:** Family-size boxes shrank from 20 oz to 18 oz to 16 oz while prices stayed at $4.99–$5.99
-- **Crackers:** Standard sleeve count dropped from 4 to 3 packs while shelf price remained constant
-- **Yogurt:** Multipacks reduced from 6 oz cups to 5.3 oz cups
-- **Paper towels:** Roll count dropped from 12 to 10 while price stayed the same
-- **Dish soap:** Bottle volumes shrank from 24 oz to 20 oz
-
-In every case, the per-unit cost increased even when the shelf price did not change — or changed less than the size reduction warranted.
-
----
-
-## How Much Does Shrinkflation Cost the Average Family?
-
-Estimates vary by shopping habits and product categories. CartSnitch analysis of manufacturer packaging data suggests the average US household spends an additional $80–$120 per year on cereals alone due to shrinkflation. Across all categories — snacks, dairy, household goods, beverages — total hidden costs per household are estimated at $300–$500 per year.
-
-These figures are directional estimates based on publicly available manufacturer packaging data, not CartSnitch production data.
-
----
-
-## Why Do Brands Use Shrinkflation?
-
-Brands use shrinkflation because consumers notice price increases more than package size decreases. A $5 cereal box going to $5.50 is visible and may cause consumers to switch to competitors. A $5 cereal box shrinking from 18 oz to 15 oz at the same price is rarely noticed until someone like CartSnitch tracks the unit price.
-
-Shrinkflation is most common in products where:
-- Brand loyalty is high (consumers repurchase without checking alternatives)
-- Unit prices are not prominently displayed
-- Size reductions are modest (5–15%)
-- The product is purchased regularly
-
----
-
-## How Do I Detect Shrinkflation?
-
-Three ways to catch shrinkflation before you overpay:
-
-1. **Track unit prices** — Divide the shelf price by the size (oz, g, count). If the unit price goes up but the product looks the same, you are being shrunk.
-2. **Compare across brands** — A competing brand may offer more product for the same or lower price.
-3. **Use CartSnitch** — CartSnitch monitors unit prices on your tracked products and alerts you when a product you buy regularly gets smaller or more expensive.
-
----
-
-## Does Shrinkflation Affect Store Brands Too?
-
-Yes. Store brands (private label) also engage in shrinkflation, though they tend to do so less aggressively than name brands. National brands rely more heavily on shrinkflation because they cannot compete on price as easily as store brands do.
-
----
-
-## Is There a Campaign or Movement Against Shrinkflation?
-
-Consumer advocacy groups have lobbied for:
-- Mandatory unit price display at shelf level
-- Required advance notice when product sizes change
-- Clear "size changed" labels on packaging
-
-CartSnitch is built to give consumers the data they need to make informed decisions — even before regulation catches up.
-
----
-
-## How Is Shrinkflation Different From Price Gouging?
-
-Shrinkflation is a gradual, product-level practice by manufacturers. Price gouging is typically a retailer or seller raising prices sharply during a supply crisis or emergency. Both harm consumers, but they are distinct practices.
-
-Price gouging is illegal in many states during declared emergencies. Shrinkflation is legal year-round.
-
----
-
-## Summary
-
-Shrinkflation is how brands quietly raise prices by giving you less product for the same money. It is legal, common, and affects the average family by hundreds of dollars per year. The only defense is tracking unit prices — and CartSnitch does that automatically.

content/marketing/blog/what-is-unit-price.md

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+---
+title: "What Is Unit Price and How Do You Calculate It?"
+slug: what-is-unit-price
+status: draft
+version: 1.0
+last_updated: 2026-03-22
+description: "Unit price is the cost per ounce, gram, or sheet — the number that reveals which product is actually the better deal, and exposes shrinkflation before you realize you're paying more."
+tags: ["unit-price", "shrinkflation", "grocery-prices", "smart-shopping", "explainer"]
+---
+
+# What Is Unit Price and How Do You Calculate It?
+
+When you see two products on a shelf at different prices, the obvious move is to pick the cheaper one. But what if the cheaper item is actually a worse deal? Unit price is the metric that tells you the truth.
+
+## What Is Unit Price?
+
+Unit price is the cost of an item per standard unit of measurement — price per ounce, price per gram, price per sheet, price per load. It lets you compare products of different sizes against each other fairly.
+
+Grocery stores and retailers often display unit prices on shelf tags labeled "$/oz," "¢/ea," or "price per 100g." You can also calculate it yourself.
+
+## How to Calculate Unit Price
+
+**Formula:** `Unit Price = Item Price ÷ Size`
+
+**Examples:**
+
+- Product A: $4.99 for 16 oz → $4.99 ÷ 16 = $0.31 per oz
+- Product B: $3.99 for 12 oz → $3.99 ÷ 12 = $0.33 per oz
+
+Product A costs more upfront ($4.99 vs $3.99) but is actually the better value at $0.31/oz vs $0.33/oz.
+
+## Unit Price vs Shelf Price
+
+| Term | Definition |
+|------|------------|
+| **Shelf price** | The total price you pay at checkout |
+| **Unit price** | Price divided by size — the true cost per useable unit |
+
+Shelf price misleads you when product sizes vary. Unit price reveals the actual cost regardless of packaging.
+
+## Why Unit Price Matters: The Shrinkflation Example
+
+Brands know unit price is how smart shoppers compare. Instead of raising shelf prices (which shoppers notice), they shrink the product. The shelf price stays the same. The unit price goes up.
+
+**Real example:**
+- 2021: Cereal box — 18 oz at $4.99 → $0.277/oz
+- 2024: Same brand, same shelf price — 15.5 oz at $4.99 → $0.322/oz
+
+The shelf price did not change. The unit price went up 16.1%. You are paying 16.1% more per ounce for the same product without realizing it.
+
+This is shrinkflation, and it is happening across cereals, snacks, dairy, household products, and more.
+
+## How to Use Unit Price at the Grocery Store
+
+1. **Look for the small print** — Most stores label unit price on the shelf tag. Find the "$/oz" or "¢/load" number.
+2. **Calculate yourself** — Divide shelf price by size (oz, g, sheets, loads). Write it down or use a phone calculator.
+3. **Compare across brands** — The brand with the lower shelf price is not always the lower unit price.
+4. **Track it over time** — If you buy the same products regularly, unit price changes reveal shrinkflation before the brand announces it.
+
+## Unit Price and CartSnitch
+
+CartSnitch automatically calculates unit prices for the products you track. When a brand shrinks a product, CartSnitch flags the unit price increase so you see exactly how much more you are paying per ounce — even if the shelf price never changed.
+
+## Summary
+
+Unit price is the most honest way to compare products of different sizes. It reveals shrinkflation, exposes hidden price increases, and helps you make truly informed purchasing decisions. The formula is simple: divide the price by the size.
+
+**Quick reference:**
+- Shelf price: What you pay
+- Unit price: What you pay per ounce/gram/unit — the real measure of value