Selling at Flea Market - Help

I'm going to be selling soy candles at a flea market. Help!

What's the best size to sell - 4oz, 6oz, or 8oz. I'd like to sell 4 and 8 oz of the same scent. Is this smart? Do people buy the larger size over the smaller. I'm on the East Coast in a pretty expensive city. So, I'm thinking about offering the 4oz for $7 and the 8oz for $14.00. Thoughts?

I'd ideally like to start with 10 or 11 scents. Is this too much or enough for a flea market?

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