Molgrips,
problem being that if you want to sell, you have to both have the stock to start with, and then get out there and actually sell it – the internet really is a bit lame and quite often pointless. Etsy / Folksy are tough joints to crack; if you don’t have good sales within a few months, forget it. Getting the stock is easy, it’s the selling that is hard, especially at craft fares where you may well find a few people doing exactly the same – cup cakes anyone?
Stall fees vary hugely – some councils charge nothing, whilst some places can be £200 per day. Average seems to be £20 to £30. Don’t forget public liability insurance either; £5m needed at most places. I’d avoid the big bill places as I’ve heard only one person pockets money at those gigs. I met another t-shirt seller who’d dumped £30k on his t-shirts, spent £700 for a three day event, came away having sold 12 t’s.
As for the need for a lot of stock – just get a smaller table and pad it out. If you’re brave, have a table outside your house one morning and see how you get on. Neighbours can be brilliant customers.
Most profitable things I’ve seen; guy who blows balloons up and makes things out of them at £3 a pop 😛 and the woman making pakora products from cauliflower – £5 for four. For fried cauli.
Worst I ever saw was a woman who made greetings cards. In 8 hours she made £2. That was a sale to her mother.
Good luck with it, but don’t expect world domination.