How much would a average sheet of plywood cost? I have no experience,but I only just had the urge to build...

I have no experience,but I only just had the urge to build a workstation table. I be also wondering how much would a sheet of plywood cost (average)?
Answers:    For what your thinking of making, a table, you would need 3/4" 4 X 8 sheets, probably should bring back birch faced type, depending on where on earth you live about $40 to $60 a sheet.
it depends on the concreteness and if you get it treated... Untreated 3/4 surrounded by a 4x8 peice could be anywhere from 20-25 bucks ide say~