Hii! I’m having my first market on Saturday so I don’t really know much either lol but I do have some ideas!
I’d have some baskets so there’s a fiver basket, a tenner basket etc, with whatever common prices you have. Or you could do a basket where the price ranges from 5-10 (whatever currency you have) then you could tie a string or safety pin a tag to the item.
Or you could just have a label on them and they’re just laying out.
I think have them attached is better so then if you’re outside then they don’t fly away, or they could just get mixed up with other tags if the items are moved about.
I’d just credit the person on the tag with the price and other info. If you’re selling clothes you might want to include washing info as well.
If you have any questions (even though I’ve not done a market before) feel free to ask because I want have thought it through and have an answer! You should also do a mock set up so you know how you’re gonna have everything, then take a photo so you can replicate it the next day!