Best place to buy 1/0 gauge?

[tysonm 0]

Where is the best place to buy Knukonceptz 1/0 gauge wire for the cheapest price?

And I also need suggestions on the best place to run my wire in my 2011 mazda 3. Right now I have Knukonceptz 1/0 gauge and the only place I could wire it was under my center console then I came out the side (driver side) and under my seat, and I don't know how to get it into the trunk of my car with it being un noticed, how can I hide it going through the back seat area into the trunk?