I am going to echo what others have said above about your team building them. In our new shop this year we just built 8 new 4x8 tables and instead of butcher block we just have 3/4" cabinet grade plywood on the top and they work great and a plenty sturdy. We also did the shelf under for totes just like yours. Each table cost about $150 (most of that was the plywood) and they take no more than a couple hours to knock out. While you are sacrificing the look you do have the added benefit of cost savings and if you ever mess up the top you just change the plywood.
I will try and dig up some photos of our workbenches, but they are basically this
http://www.hammerzone.com/archives/w...below20xl.html with a few modification such as doubled up 2x4's in the corners, changed to 4'x8' and adding some center supports.