I also charge 95 cent per oz. for soy on refills, but I also only do refills for people I know. The jars have to be washed and suitable for candles. Any thin jars or jars with very small neck openings do not get poured. I also keep notes on every refill ie, wick size, fragrance load, colour etc., as it makes it easier when they come back for a fill on the same jar.