That's the problem with home crafting, you generally only make the cost of the materials back and can't charge much for the labour. Depending on your market about all you can do is pitch the candles as a quality / premium product, emphasises the smell, the burn length, how much better they are than the cheapo paraffin wax ones that you get in the supermarket. You could also mention it's a natural wax rather than a fossil fuel variant. A quicker way to make sale candles is to roll them from sheets. You can also do smaller sample ones by cutting the sheet into strips so you're in effect making rolled tealights, just without the metal case.