Observations on PS3 Pricing

I just noticed something odd in the price of different Playstation 3 models: Amazon.com’s PS3 page has:

Playstation 3, 120 Gb: \$299.99

Playstation 3, 250 Gb: \$414.99

From this, we can work out the price per gigabyte: (\$414.99 – \$299.99) / (250 – 120) = \$0.8846 \$/Gb.

That’s not the odd part. Since I have some old Playstation 2 games, ideally I’d like a PS3 that’s backward-compatible with the PS2. According to Wikipedia (which can be relied on, here, since it’s a nerd topic), those are the 20 and 60 Gb models, as well as some 80 Gb ones.

Again from Amazon, we have:

Playstation 3, 20 Gb: \$229.99

Since this has 100 Gb less than the 120 Gb model, we would expect it to cost 100 × \$0.8846 less, or \$211.53. But it costs \$229.99, or \$18.46 more. So that \$18.46 must be the price of PS2 compatibility.

Now we get to the odd part:

Playstation 3, 60 Gb: \$849.99

We would expect this to cost \$299.99 (the price of a 120 Gb model), minus 60 × \$0.8846 = \$53.08 because it has 60 Gb less storage, plus \$18.46 for PS2 copmatibility, for a total of \$265.37. So why is the real cost over \$500 higher?

All I can figure is that the 60 Gb disk is a lot bigger than a 20 Gb disk, leaving less free space inside the case. So the PS2 compatibility has to be built out of smaller components, which are vastly more expensive.

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