$200 for a basket that size is pretty good. I built a smaller one this summer with scrounged and salvaged material, didn't cost anything but welding and sanding consumables. Even the paint for the welds was free partial cans. It's 30x48, a bit tight for two people but keeps the cg better for off pavement ops, and it's the size of the catwalk I had for the base.
http://s94.photobucket.com/user/flyerdan/media/Flambe/100_0926_zps822c2698.jpg.html I've got some lightweight expanded metal, might put some of that in the back to keep things in or out, as the case may be.