[Skanker]

well, lets see---to build the ramp, say in plywood, you would need this much stuff:

Surface:

8 sheets 4 X 8 Plywood (probably 1 inch thick)
At roughly $16 a piece (I'm probably WAY off... haven't been to the hardware store) $128

Vertical Wood Struts (8 ft 2X40) to support the large ramp pieces- you'd probably need one every two feet... that would come out to 16 of them (gotta support the top of the bridge too).... they are like 6 bucks apiece... so $98

Horizontal wood struts (12 ft 2X4) you'd probably only need 6 of these... say, roughly $8 each--- $48

Posts to hold up the top--- you'd probably want 4X4, 2 ft long. say one every 4 ft on each side--- that's 8 of them. 16 ft. so two 8 ft 4X4's. say another $20.

THEN you need a couple huge boxes of screws (or nails, or bolts or whatever)... so add in $30.

add it all together, you can make just the ramp for---- roughly $324

that is probably an underestimate. and it's only the basic ramp-no polycarbonite sides, no field, no borders, no player stations.....

good luck building!