Reply to Were to buy buttons and faders

Hi, I want to make my own controller but I don't know where to buy buttons and faders. I'm located in Canada and I would like to have the cheapest pieces but with a relatively good quality.

I've picked up the names in the midi fighter X contest assets :
Toggle switch
Rectangular silicon Button
Stepped encoder
Mini fader
Cross fader
Arcade button
Endless Potentiometer with 11 led display

*can be other similar parts