Re: Cheap lumber
I agree with Mike Palmer about using industrial grade lumber. I don't buy anything like the amount he describes, but a local lumber yard offers what the call "crating lumber" it's #4 as opposed to the better grades you find at the big box stores. I build medium boxes for @$3.50 and deeps for less than $5.00.
Culls at HD or Lowes are a good deal. But supply is inconsistent. I know I can always get what I need when I want it and the cost is acceptable.
"everyone is entitled to his own opinion, but not his own facts," Daniel Patrick Moynihan