The last time i ordered from Monoprice, i decided to get their 'premium' cables which were a few bucks more than the lowest priced stuff.
It turns out i was sent the same 'brand' as what they were selling in a local Future Shop.
By going with Monoprice i saved 90%.

Can't say i've ever found good deals at Home Depot. The cable they sell here is really stiff.

Another Cdn company where i've found more than just cables is Solen in QC.
http://www.solen.ca
You can get new fabric for grilles, speaker feet, crossovers, tweeters, drivers, etc.
A bit more of a technical site, but overall good prices.

"Those who preach the myths of audio are ignorant of truth."