Determine your shipping costs.
I will say that I have been within about $3 of that cost for every shipment. My only mistake was when I went to buy my boxes from Uline, I didn't consider the height of the box and an extra two inches added a lot of expense to the shipping (much more than I had estimated). Luckily the FedEx office offered to break the box down a couple of inches and was able to get the shipping price close to my estimation. The next time I ordered my boxes, I made sure they were two inches shorter, which I can do since my wreaths can be crushed a little.
Remember that your shipping costs are not only the shipment, but the box, ordering and shipping cost of your shipping materials, enclosed statements and your time and gas to ship.