Snap the barcode in-store. Your Suruga-ya kaitori (買取) exit estimate comes back first — then the Rakuten buy price and projected margin. Know where you'll sell, and for how much, before you commit any cash.
Not just another data tool. Kobanio is designed around the sedori principle: your kaitori (買取) exit price appears first, before the buy price. Because capital frozen in unsellable stock is the real risk.
Just send a product photo on LINE. AI reads the barcode and converts it to a JAN code.
Estimates the kaitori buy-back rate from Suruga-ya's resale price — and returns it first. Know your exit before you source.
Instantly shows the lowest price and top 3 Rakuten shops. Buy in one tap via affiliate link.
The gap between buy and exit, at a glance. Positive ✅, negative ❌ — decide on the spot.
When a product you're watching drops, LINE pings you. A phone notification — react even while standing in the shop.
Tiếng Việt · 日本語 · English · 中文. Built for foreign sedori sellers living in Japan too.
No app, no sign-up — just LINE.
Add Kobanio on LINE. No install needed.
Send a barcode photo, or a 13-digit JAN code.
Buy price · exit price · margin come back. Buy or skip — decide right there.
Core features are free forever. Going serious? Pick Starter or above.
Try it first
When you get serious
Earn with the community
Expert