Agriculture & Food / E-commerce Web
FreshPrice — Cross-4-EC Vegetable & Food Price Comparison Platform

Cross-compare prices across 4 major EC sites. Never miss the right time to buy — a fresh & grocery lowest-price radar。

AgriHarvest Co., Ltd. — Monitoring 500K+ food SKUs (vegetables, fruit, rice, seasonings) across 4 major EC sites 24/7. Built a B2C price comparison portal integrating "the lowest price for the same item," "30-day price trend" and "sale-detection alerts."

500K+
Monitor SKUs across 4 major EC sites
Vegetables, rice, seasonings, processed foods
1M+
Daily crawl-processing requests
Distributed crawler — auto-scaling
4 major EC
Cross-compare major EC sites on one screen
3 major + 1 grocery-specialist EC
Challenge
Before

To compare the same food across 4 EC sites, consumers waste time and effort jumping between multiple sites on every purchase. Missed price drops and sales happen often, so they can't buy at the optimal time.

  • Want to compare the lowest price for the same item at a glance
    Jumping between 4 EC sites: avg 6 min/purchase
  • Want to judge the right time to buy from past price trends
    Price history limited to a single EC
  • Want to know about sales & price drops in real time
    Missed price drops: avg 8/month
  • Want to see trusted popular products & rankings across all sites
    Each EC's rankings are fragmented
Solution
After

A distributed crawler infrastructure that monitors 4 major EC sites 24/7, paired with a same-item matching engine, unifies cross-marketplace price comparison, price-history charts and sale alerts into a single portal — so consumers never miss the right time to buy and can purchase food at the lowest price.

End-to-end: 4-EC collection → SKU normalization → cross-comparison & alerts EC-A Major EC EC-B Major EC EC-C Major EC EC-D Grocery EC Distributed crawler Auto-scale ETL SKU normalize Compare API ES + history DB Node.js Web Compare view Price History Chart Notify Drop Push Auto-scaling Crawler EC2 auto-scales up and down as demand spikes or new EC sites are added (cost optimization)
app.freshprice.example.jp/compare/tomato-organic-1kg
Lowest EC-A ¥980 incl. ship EC-B ¥1,080 +ship EC-C ¥1,150 +ship EC-D ¥1,220 +ship Today's low 30 days ago Today
Product comparison screen — cross-4-EC lowest price + 30-day price trend chart
Tech stack Next.js Node.js MongoDB / ES Scrapy-Redis AWS EC2
10months
78person-months
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