I bought some of the unfinished Radiata plywood from HD recently to make an outfeed table. The lure of 9-ply plywood seemed awfully tempting, especially with the $35/sheet price. What I found, however, is that there were many voids in the plies, which often were jumbled up together inside, and the veneer was micro-thin and produced a pretty sorry finish. In other words...you get what you pay for. With that said, I'd probably still be tempted by the low price for things like an outfeed table which I'm not trying to display to the world.