I got mine from amazon, since I am in California I hate to pay the 9.8% sales tax for anything so I buy everything I can on-line. It works good with the Bamboo app, but i found that you can not set up noteboooks so it it a little limiting for me. I use the Note HD app as well as a few others, I keep trying to see which best fits my needs.
I have tested quite a few styluses for the iPad and can recommend one tht stands out from all the others for handwriting: the iFaraday. Don't know about drawing or just punching virtual buttons---.
It looks kind of like the targus iPad stylus for $19.95 au. I found it ok but hard to find that allusive pen to draw with. Still haven't received my alupen yet to rate. My best is the pogo so far.
Ok so here is my link to my review if your interested.