Where to buy Molex/pins in Canada?

Not sure where you are at- I have had some success buying from Sayal electronics, although the selection varies from store to store and from what I recall their website is a bit of a disaster to navigate.

GPE does deliver up here. Digikey.ca as an alt.

The good thing about Great Plains is that they cater to the hobby and I've always found Ed helpful when responding to my emails. Shipping has always been reasonable for an American site. A lot of their kits appear to be out of stock at the moment which is too bad as I've found that handy for ordering in the past.

Digikey as mentioned is great too, they won't be able to help with your pinball questions and I have found I have to be creative when searching and filtering their search results due to their huge inventory but shipping is cheap and lightening fast.

Pro Tip - Use GPE's part numbers when searching Digikey

I have also used Tadya with success!

I buy from Newark

http://canada.newark.com/b/molex?rd=molex