Why this won
Uses your existing B2B skill, fits the €500 budget, can be delivered remotely, and reaches credible revenue evidence before software development.
PERSONALIZED RECOMMENDATION
The business I would test first
A productized operations sprint for small European service firms.
Still unproven
Whether the problem is urgent enough for a buyer to pay €1,500 for a two-week sprint.
First proof
Ask 10 qualified operators about one costly workflow bottleneck and request a paid diagnostic.