These numbers must be a Canadian thing! lol As I am currently building another large Plywood tank I was searching for acrylic and it is NOT cheap. I just checked and a 1/2" 4x8 sheet is $483 USD. For the 1.5" sheet I needed it was over $1600 USD. Also, the epoxy is only $150 for a 1.5 gallon kit (Max ACR). Without digging to deeply into it I could probably build a 300 gallon wood tank for about $500 USD vs roughly $12-1300USD for an acrylic build. For the 1200 gallon Im building... its not even in the same ballpark.