http://www.cleanrun.com/ sells agility course stuff... though honestly, I can't see the difference between bought vs made jumps being enough to warrant coughing up to buy them instead of making your own, especially if you're not sure you're purchasing the *exact* jump that will be used at competitions or not sure that the exact same style will be used at every competition. Also, I wouldn't be surprised at all if "homemade" (rather than store-bought/mass produced) jumps were actually used at competitions.
I made an entire agility course for my bunns myself and wrote up a tutorial about it in my blog. The tutorial can be found
here. I started out with instructions provided by the website for the
Canadian Rabbit Hopping Club and advice given by members of that club who hang out on RO, modifying stuff as needed based on what materials I could (or couldn't) find.
I'm pretty happy with the jumps I made, but in retrospect I wish I'd done 2'' spacing between poles rather than 3'' - I'll probably go back and change it when I move back to my house in San Antonio (living in Houston temporarily and I left the agility course behind since there's not really room for it in our apartment). Gaz (my pudgy/stocky Holland lop) got up to 6'' and Nala (my athletic lionhead) got up to 9'' very easily... but once they hit those points, they seemed to lack the confidence to even try when I had it set to 9'' (Gaz) or 12'' (Nala) and would just "brute-force" their way through the jump, knocking the poles out of the way.
Oh, and there's a "
social group" here on RO for people who do (or want to try) agility with their rabbits, though it's not very active at all (probably because it's really hard for people to wander across if they don't know to look for it).
As for whether or not your rabbit would even want to do agility... some take to it faster than others, but even my super-loafy little couch potato got into it (just not as much as Nala). In a good "home" course, many obstacles will be adjustable (jumps, A-frames, etc.) so that you can make them very easy to begin with and progressively ramp up the difficulty as the bunny's skills and confidence increase. I honestly think that *any* (healthy) rabbit can be taught to enjoy agility training to some degree.
In my blog, I also talked a little about how I taught them to use the course - when you watch agility videos, the rabbits choose to follow the course of their own volition and understand exactly what each obstacle's goals are. When you introduce a rabbit to an agility course for the first time, however, they tend to look at you like "WTF is this stuff and where's the food?". They're quick to go around obstacles rather than over/through them if there's nothing to prevent them from doing so.