I didn't remember that. It's been a long time since I had either of those. and I never had the first generation DS. I just remember all my systems looked the same to me. But memory falters sometimes.
Not everyone trades in their system though, most might, but not all, and sure, selling to gamestop might require the charger, that isn't a requirement for selling on ebay or amazon to get higher cut of the value then gamestop offers, which, as I hear, more people are tending to do because they're sick of only getting a 1/3rd of the systems value.
I just recently bought a 360 to replace my old dead one, not every system even listed the controllers, hell some don't even have power cables. I saw a handheld psp that didn't even include the battery. Things aren't the same for online personal sales as they are for retailers.
But Yeah... we pay the same cost. Nintendo doesn't, but I never said they did. I just said we do, and that's the truth. Had Nintendo included it, the system would likely be 219.99$. So yeah. You pay the same, maybe a bit less depending on shipping, taxes etc... or if you even need the charger. So there's plenty of space to actually save the consumer, people just have to stop and see the reality of it.
Which nobody wants to do. Gamers are notorious for labeling companies the devil when they may not be. Just look at EA (Though yeah, they kind of do suck). Named worst company in the US by gamers. Yet comcast makes it by just fine and everyone (gamer or not) hates them.