Case packing and shipping
Updated
A glass candle is the worst shipping proposition in the estate: heavy, breakable and heat-sensitive at once.
Heavy and fragile
A 9 oz glass candle in a carton is most of a pound of glass around six ounces of wax.
Which means shipping cost is a large fraction of the order value, and breakage is a real rate rather than an occasional event.
Packing a case
Dividers, always. Glass against glass in a carton does not survive a courier.
Upright, with the lid on, and enough fill that nothing moves. Movement is what breaks things, not impact.
Double-wall outers for wholesale quantities, and the batch code on the case so a problem is traceable without opening it.
Work out the case count against a weight a person can lift. A case of twelve 9 oz candles is heavier than it sounds and a warehouse will not thank you.
Heat in transit
A delivery van in summer goes well above the melt point of any container wax.
A candle that melts and resets in transit arrives with a collapsed, uneven surface, often with the wick leaning. It is not damaged in any way that matters and it looks ruined.
Ship early in the week so nothing sits over a weekend, avoid dark outers, and say something honest about warm weather rather than waiting for the complaint.
What it does to online
Weight and breakage together mean the economics only work at a basket size above a single candle.
Which pushes the online business towards sets, multi-packs and gift boxes, and away from selling one candle at a time. That is worth knowing before designing the packaging rather than after.