Vicky, don't take this the wrong way- but have you attempted a google search? I just googled "agility equipment" and found all kinds of links, including prices. Obviously I can't comment on the quality of any of them- but you certainly could google opinions on specific brands.
We built our jumps including a broad jump, tire jump, and regular jumps. You can purchase most of what you need to build jumps at a local hardware store. The only thing I couldn't find was 5-way crosses. I got those online at www.usplastic.com . We also built our own A-frame and dog walk using the obstacle specifications found in the AKC agility regs. http://www.akc.org/pdfs/rulebooks/REAGIL.pdf You don't need to be super handy to build most of the obstacles. It's actually kind've fun.
Editing to add: We originally used sliding jump cups. Now that we have people coming over for regular training, the jump cups didn't cut it and we bought jump cup strips from Clean Run. ( www.cleanrun.com )