sorry to say but Leo is correct on this. The casing is really made out of Bronze.

ROLF! hahahaha oh man you made me pee hahaahahha

come on, don't be rude with Leo-J.. he just said what he tought (=

hahahaha

Where you reading that? Bronze has gotten pretty expensive on the commodities market lately.  Since it's made of copper.

I mean... it doesn't even look like real bronze.

 Maybe?  I don't know... i mean it's sold so much already... it's going to be hard to sell more DS unless people start buying 2nd and 3rd ones.

Its actual bronze, this psp is priced much higher than the other sliver model psp.

If it's actual bronze, let's see a link that even hints at that. I guarantee you won't find one, because it simply doesn't exist.

 There is absolutely zero evidence supporting your belief, sans the "price". But price is a very poor argument, as it's not that significant a price difference. What's more is that it comes with items that could easily account for enough of that price to make the rest be due to its status as a collector's item.

Additionally, the amount of bronze required to make an entire PSP's casing is worth at least $80 (and that's on the CHEAP side). Bronze plating is more possible, but doubtful.

 Stop using the price as your source of reasoning, because it's really lousy reasoning. Start considering that it's NOT made of bronze, or come up with some solid evidence.

Seriously.

i doubt it's actual bronze
would that make it too heavy? it just doesn't seem right to me

Its actually bronze or bronze platted which would make more sense.