I looked into this a few years ago.. it was when the cost of gas was sky high .. but 12" tube was going to cost me about $250. I was FLOORED!!! i ended up getting a crappy used tube for around $75. It weighed about 75 lbs. it worked ok.. but it wouldn't fit my sails when i upgraded from a TheMightyHobie18 to my mystere.

I hear / know Treys box's rock. and i am sure they are worth every penny... but its so hard to part with $400 (or whatever the exact cost was) when my sails fit in my car (but it sure stinks carrying them up and down 3 flights of stairs every time

i ended up getting the worlds crappiest aluminum box for $40. it stinks but works...