Wiimotes, imo, would be harder to come by, simply because of the bluetooth + glovepie. But since Karl just released nunchuk support, that might increase the rarity of the nunchuk as well.
I think the Wiimotes are harder to get. I've seen nunchucks in many places in Lexington, KY, although, with the release of Wii's today, I'm sure they are now out.
for me. it took me the second day to find wiimotes and nunchucks. when i found it, i found a grip. im just waiting for wiiplay for the last wiimote.
wii motes: fair
nunchuck : a little more fair then wiimote
classic controller: very easy
point card: very easy
I would say Nunchucks are way harder to find than a Wiimote, at least in my area. But i don't have a problem really, i can buy whatever i want from an online shop of my country.
I got lucky getting a Wii on 12/23 in time for Xmas, and then a week after picked up a remote at EBgames at the mall. 2 weeks after that i got another Nunchuk at Toys R us (in there for something else) saw they had 3 left and i grabbed one. They had a lot of the classic controllers. So for me it's pretty easy.