Online Computer Help

I am looking for a online store that specializes in selling used and refurbished computers/parts.

I would prefer to shop from a Canadian company, but as long as they ship to Canada is what's really important.

So far these are the places where I've been shopping, and why I don't like shopping from them.

ebay;
I really don't find I'm getting a good deal. Sellers charge what the items worth in the shipping and handling, so it's not always a deal.
It takes me hours to search, compared to a site like tigerdirect or newegg.

I've found some sites that specialize in used hardware but it's only for wholesale.

I trust I will get sound advice here, and I appreciate it.

Thanks,

Ash