^ True. Unlike US/UK amazons, amazon.ca doesn't even try to give you a good price on discs. Whenever they have a "good deal", it is almost always because another major Canadian retailer is selling at that price. IOW they sell at the highest prices the market will bear, not what you should expect from an online merchant IMO. I can assure you it wasn't always like this, amazon.ca used to have very good prices, but only back in the day when our $ was crap. You'd think our good $ would have made their prices even lower, but they went the opposite way... To be fair, amazon.com has been really lousy too in general this year, I've hardly bought anything from them. Over the ~15 years I've been buying from amazon, the vast majority of my purchases have moved from amazon.ca, then to .com, now to .uk. The .com prices would be a little more "reasonable" if their shipping prices were...
There are rare exceptions, real anomalies. The BSG BD set and The Wire DVD set are both at good prices in Canada. Two things (that I've noticed) out of thousands over several years isn't very much...I've seen better deals more consistently at FS even, and they give nothing away, so you know amazon.ca is pushing the price envelope. As you said, CDs and books can sometimes be a good deal at amazon.ca (with our extremely restricted other book purchasing choices here), but it's rare that CD prices even come close to their low price in the UK, BDs too but to a less drastic extent.