marketplace
Put it like this. If you run a stall in a marketplace, the chances are that you have a general area of business, but you mostly just sell whatever you can get your hands on that week. If your dodgy buddy got his hands of a job lot of something at a discount, then that’s what you’ll be selling. This might be fun – and when you have a good week, you’ll have a really good week – but it’s no way to run a real business in the long-term.