Nyko Accessories in Canada?

Does anyone know of any retailers (either online or brick and mortar) that sell Nyko accessories? Specifically the UBoost and Charge Link cable for the Wii U.

I remember having a hell of a time finding a Perfect Shot years ago until I stumbled across one at an HMV. Now that they no longer sell anything gaming related I'm not sure where to look (I've checked all the "usual places").

Thanks.