Office Depot is big in the US, but only has a presence in 5 Canuck provinces: AB,BC,MB,SK,ON. If you're not shipping to one of those provinces, you don't get free shipping on orders over $50 and you can't use the "clickable" coupons.

Staples is also known as Business Depot & Bureau En Gros.

Tigerdirect.ca ships from the US (Illinois) via UPS. UPS is usually a recipe for disaster, but in this case Tigerdirect has made some arrangement with UPS to prepay customs so there are no hidden charges like UPS's normally 'extortionate' brokerage fees. Tigerdirect's site states "There are no Duties or Fees! Just pay the price of the product, plus any applicable tax".

And, in the event that you have to return something, you can ship it to TigerDirect's Markham warehouse. Call for an RMA and they'll give you instructions for shipping at no cost.