We ran a web scraper startup selling leads to London property agencies. I built the product in 3 months in Hungary after which my partner was about to sell it

We ran a web scraper startup selling leads to London property agencies. I built the product in 3 months in Hungary after which my partner was about to sell it but couldn't due to a vis major. I extracted the addresses of all London agencies (~2000) from a website collecting them. Then I built a simple CRM system in about a week that was essentially a Google Maps frontend with all of them on it + ability to add notes & color mark them according to their status (if I have visited, interest, etc.). Than I flew to London, printed some brochures and walked in ~500 of them in a week. (London is/was packed with them, there were sometimes 3 in a row.) I ran around with a brand new iPad 2 which brought me lots of interest - in the iPad.. We got 1 big sale, where I bumped into the CEO of a small chain. He was very entrepreneurial and simply wanted to give it a try. It took a couple of days of negotiation over the phone to iron out the terms. There was no second in-person meeting. FYI, we got some 10 smaller sales but the marked proved way smaller than anticipated so we shut down.