I have around 40 sheets of 3/4 T&G 4x8 subfloor. Theyre new and have never been exposed to any kind of weather or anything like that. Theyre $73 dollars and some change (contractor price) as of this morning at the SBS sales counter. These are the actual sheets that are rated for the floor 24"o.c. FCFS and i dont think these will last very long considering theyre lretty much half price.