Faster, smarter Amazon enhancer. Strictly detects Amazon Monthly Payments (e.g., $xx/month for N months). No Affirm/Klarna/Prime Visa/financing noise. Lazy Camel/Keepa, SPA-aware, saved gear position, immediate monthly refresh + detector debug toggle.
# **Amazon Enhancer: Monthly + ReviewMeta + Camel + Keepa + UI + Dark + Review Highlights**
Supercharge your Amazon shopping with a fast, lightweight userscript that adds **true Amazon Monthly Payments detection**, price history, smarter reviews, and a clean, customizable UI.
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## 🔹 Core Features
* 💳 **Amazon Monthly Payments (strict)**
* Highlights items that offer **Amazon’s own** installment plans (e.g., “\$xx/month for N months”), **not** BNPL/credit promos.
* Optional **Filter: Only Monthly Items** hides everything else.
* New: card-level text scan, whitespace normalization, and “monthly / month / mo” variants for rock-solid detection.
* Handy **Rescan Monthly Now** button and an optional **console debug** toggle.
* ⭐ **Top Reviews, Auto-Highlighted**
* Surfaces the **3 most helpful** reviews (helpful-count aware).
* 📄 **ReviewMeta Integration**
* Shows adjusted rating + “potentially unnatural” percentage, with a one-click link to full analysis.
* 📈 **CamelCamelCamel & Keepa (Lazy)**
* Inlines price-history charts only when scrolled into view to save bandwidth.
* 🎯 **Sticky Price Box**
* Keeps the price in view while you scroll product details.
* 💬 **Auto-Expand: Reviews & Q\&A**
* Opens “see more” sections automatically.
* 🛑 **Ad/Sponsored Cleanup**
* Hides sponsored rows, ad carousels, and other noisy blocks.
* 🧭 **Sold-By Highlight**
* Adds a border so seller info is easy to spot.
* 🎨 **Themes**
* Auto / Dark / Light (one click in the panel).
* ⚙️ **Floating Gear (Draggable + Remembers Position)**
* Quick access to all settings; position persists across sessions.
* 💾 **Persistent Settings**
* Everything is saved to `localStorage`.
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## 🌍 Region Support
Works on: `.com`, `.co.uk`, `.de`, `.fr`, `.it`, `.es`, `.ca`, and `smile.amazon.com`.
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## 💡 How to Use
1. Install with **Tampermonkey** (or Violentmonkey).
2. Open Amazon; a ⚙️ gear appears (bottom-right).
3. Click to open the **control panel** (see note below).
4. Toggle features and theme in real time.
5. Use **Filter: Only Monthly Items** to see **only** Amazon installment-eligible results.
6. Use **Rescan Monthly Now** after changing monthly/prime filters.
7. Drag the gear anywhere—its position is saved.
> ⚠️ **Note:** On some pages you may need to click the gear **twice** for the menu to open (Amazon’s SPA updates can swallow the first click).
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## 📝 Notes & Tips
* **Strict Monthly Detection:**
Detects Amazon’s **own** “\$xx/month for N months” offers; explicitly **excludes** Affirm, Klarna, Prime Visa, store cards, leases, or subscriptions.
* **Performance-Friendly:**
One MutationObserver with throttled rescans; lazy-loaded charts; minimal CSS/DOM work.
* **SPA-Aware:**
Re-initializes on soft navigation (pushState/popstate).
* **Debugging (optional):**
Enable **“Debug: Monthly detector → console”** in the panel to log why a card matched or was excluded.
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**Author:** Eliminater74
**License:** MIT
**Requires:** Tampermonkey / Violentmonkey
