Okay, So here's the story. I am checking out a 9'2 RC board. It says "EPS FOAM" on the board. Now I tried reading up on what exactly it is, but I see lots of variations. There is EPS FOAM core with poly fiberglass coat on top, there is EPS Epoxy, EPS coated with epoxy resin. Here is the link. I asked the seller, but he is unsure as well. Also is this a good deal?