Katied772 : I think there are a few strategies which can be employed for selling candles. Firstly, yes you can include the shippng cost in the product cost. This is a good option.
Secondly, you can only go for Free Shipping in bulk orders. For normal orders, over 10 candles, you can opt for real time shipping quotes and for lesser than 1o items/5 items you can opt for a flat rate. A good way to make sure that you do not over charge or undercharge customers is to opt for shipping quote apps like the Multi Carrier Shipping label app. With this app, you can get quotes from UPS, USPS, FedEx, DHL for all orders. Slowly as you ship more and more, you will have idea about the basic shipping pricing structure which will prevent you from going to loss if you try flat rates. You can try this strategy.