The circle traps erect pretty quick, (under an hour with a t-post driver... But a larger trap may get built cheaper by a local weld shop than these guys on the net. Another thing to consider is a quote for 4 or 6 as the price each will be lower, and results better than one. when you are ready...
http://www.thefiringline.com/forums/...light=hog+bait
Here is my hog bait recipe...
Brent