I had a 200 line python script running on a junker PC that pulled a not insignificant amount of cash in. It was an arbitrage system that looked for poorly liste

I had a 200 line python script running on a junker PC that pulled a not insignificant amount of cash in. It was an arbitrage system that looked for poorly listed items in a couple of eBay niches. I'd literally buy the items it identified and then list them properly and reship. Average margin was 60%. On one occasion I managed to nab something for £15 and resell for £675 with a 4 day turnaround. Alas I collapsed the whole niche in the end. Edit: all it did was every 10 minutes scrape some carefully crafted eBay searches with beautiful soup 4, do some custom filtering, remove any duplicate items it had already seen (stored in redis), then send me an email via SES with the links in it where I would make a decision.