3.7 / 5

Price Sniper

Monitors prices and automatically acts when your target is hit

Useful

The Problem

Price tracking requires manual checking; alerts come at inconvenient times; deals get missed

Current Solutions (Not Great)

CamelCamelCamel (alerts only), Honey (limited), manual checking, missing deals

Who Needs This

Deal hunters, patient shoppers, people making considered purchases, bargain seekers

You want that item but not at full price. You set a price alert, then forget about it, or the alert comes when you're busy and you miss the deal. Price Sniper watches prices continuously and can take action automatically: add to cart, apply coupons, even complete checkout for pre-authorized purchases. Set your target price, your action preference, and forget about it. When the price drops, it strikes—no more missed deals or manual checking.

Honest Take

Honey, CamelCamelCamel, Keepa, and browser extensions from every major retailer already do price tracking. The auto-checkout feature is technically challenging—retailers actively work to prevent automated purchasing, and you'll hit issues with stock availability, changed checkout flows, and payment verification. Affiliate revenue could work though.

Monetization Ideas

Ways to turn this into revenue

Freemium

Free basic, $5-15/mo for pro

Affiliate / Referral

10-30% commission on referrals

Subscription

$5-29/month or $49-199/year

Features

Key features that make this app valuable

Set target price for any product
Continuous price monitoring
Action options: notify, add to cart, checkout
Automatic coupon discovery and application
Price history chart
Multi-retailer tracking
Pre-authorized purchase with spending limit
Deal scoring (is this actually a good price?)

Build Prompt

Use this prompt with an AI assistant to start building

Build a Chrome extension called 'Price Sniper' using WebInfer. Manifest V3 with alarms, tabs, activeTab, storage, notifications permissions. Adding a target: on product page, toolbar button opens popup with current price, input for target price, action selector (notify only, add to cart, auto-buy). Store target: { url, productName, retailer, currentPrice, targetPrice, action, addedDate, preAuthorized }. Background monitoring: alarms API triggers check every hour (configurable). For each target, open URL in background tab, content script extracts current price. AI handles price extraction from varied layouts: generateObject returns { price: number, inStock: boolean, couponsAvailable: string[], shippingCost: number }. Price dropped below target: execute action. Notify: chrome.notifications with one-click 'Buy now'. Add to cart: content script finds and clicks add-to-cart button. Auto-buy (if preAuthorized): navigate checkout flow, AI identifies and fills/clicks through steps, stops at payment confirmation for final user approval OR completes if fully pre-authorized. Coupon finder: before any action, search for coupons, apply best one. Dashboard: all targets with price history sparklines, action log. Safety: spending limit per day/week, require 2FA for auto-buy setup.

Score Breakdown

Pain

Clarity