B

Overseas Direct Purchase Customs Auto-Settlement Helper

3.80

Derivation Chain

Step 1 Surge in interest in Rakuten overseas direct purchases
→
Step 2 Confusion over customs duty and VAT calculations for 50-something overseas buyers
→
Step 3 Annual cumulative customs management based on purchase history

Problem

When a 50-something office worker directly purchases health foods and hobby items from overseas malls like Rakuten, they must search for customs duties, VAT, and list clearance thresholds ($150/$200) each time, and have no way to track whether their annual cumulative purchases exceed the duty-free limit, leading to unexpected tax bills. A single mistake can result in 30,000-100,000 KRW (~$22.50-75) in additional taxes and 1-2 weeks of customs delays.

Solution

By registering purchase history from overseas malls (email receipts or manual entry), it automatically calculates customs duty and VAT by item, and displays the remaining annual duty-free limit in real time. It also automatically determines list clearance vs. general clearance and provides advance notifications of estimated tax amounts.

Target: Office workers or homemakers aged 45-60 with overseas direct purchase experience, regular buyers of health foods and hobby items
Revenue Model: Free basic (5 calculations/month), Premium 2,900 KRW/month (~$2.18) for unlimited calculations + annual report PDF + customs refund eligibility alerts
Ecosystem Role: Regulation
MVP Estimate: 2_weeks

NUMR-V Scores

N Novelty
2.0/5
U Urgency
4.0/5
M Market
4.0/5
R Realizability
5.0/5
V Validation
4.0/5
NUMR-V Scoring System
N Novelty1-5How uncommon the service is in market context.
U Urgency1-5How urgently users need this problem solved now.
M Market1-5Market size and growth potential from proxy indicators.
R Realizability1-5Buildability for a small team with realistic constraints.
V Validation1-5Validation signal quality from competition and demand data.
Each dimension is scored 1-5 and weighted into grade S/A/B/C/D.
N=.15 U=.20 M=.15 R=.30 V=.20

Feasibility (70%)

Tech Complexity
29.3/40
Data Availability
20.6/25
MVP Timeline
20.0/20
API Bonus
0.0/15
Feasibility Breakdown
Tech Complexity/ 40Difficulty of core implementation stack.
Data Availability/ 25Practical availability and cost of required data.
MVP Timeline/ 20Expected time to ship a usable MVP.
API Bonus/ 15Bonus for viable public API leverage.
Total 100 points; below 50% is filtered out.

Market Validation (57/100)

Competition
8.0/20
Market Demand
6.2/20
Timing
14.0/20
Revenue Signals
10.5/15
Pick-Axe Fit
10.5/15
Solo Buildability
8.0/10
Validation Breakdown
Competition/ 20Signal quality from competitor landscape.
Market Demand/ 20Demand proxies from search and mention patterns.
Timing/ 20Fit with current shifts in tech, behavior, and regulation.
Revenue Signals/ 15Reference evidence for monetization viability.
Pick-Axe Fit/ 15How well the concept serves participants in a trend.
Solo Buildability/ 10Practicality for lean-team implementation.
Total 100 points; below 50 is filtered out.

Technical Requirements

Frontend [medium] Backend [medium] Data Pipeline [low]
Dashboard