Agility equipment, especially the contacts, can be very expensive. But there are several obstacles that you can make yourself.
Weave pole trainer (great for just starting out)
DIY: Wingless Jumps
DIY: Jumps with Wings
DIY: Weave Poles
Make your own contact board
Single treat/train dispenser (less expensive)
Target Plates (perfect for peanut butter or cheese whiz)