Josh,
Pay no attention to the clique and they will go away.
I wouldnt pay 3x's the cost of something to ship it...think about it. The smaller the box and less it weighs the cheaper it is to send, but if you are buying..whos to say what the seller is gonna do?
Its like those commercials where they sell the learning CD for only 5 bucks, then it costs like $11 to ship one CD to you...
What state are you in? Like the other person said, look for a farm or garden supply store. Agway is by me, but I am not sure if they are national? Look in the Yellow Pages under "farm supplies" or "garden supplies".
Good luck.
~Alan
p.s. Make sure you buy untreated whatever you do. Have you thought of using cypress? I use it and it works great. It is only about $4 for a 40lb bag and it looks awesome and holds the humidity like a champ. Just a tought.