I don't think anyone has a complete kit. You probably can find a traveling agility training set(equipment-instruction not included) for about $160 but it is cheaply made.
However, you can buy equipment and instruction seperately:
You can find some books and video on agility.
www.mightymitedoggear.com/agilitybooks.html www.dogwise.com www.amazon.com
Agility equipment aren't very cheap to buy. Best best is to find plans and build your own.