Pieter bought the rok.co domain for $8,141 in February, 2022. He used the domain to create an upset where he could create short links for $49 per link.
Within 5 days, he had sold 21 short links and earned $1500 in revenue. In March, he reported that he was selling 125 short links each month and earning $12,375 in extra revenue. This was an extra 10% of revenue.
He also added QR code to the upsell.