Its probably cheaper to get it via the PSN, though...the PS2 version looks more polished as well, in my opinion...not to mention the PSP version has Etna mode.
Oh, and I'm going to give some random advice to anyone playing Disgaea 2 on PSP: NEVER, under ANY circumstances, pester the shopkeepers in the shop in the Item World if they don't invite you to buy goods. I kept talking to a vendor in the hope that she'd sell me some things...she told me the shop was closed and to leave. Then MADE me leave by absolutely destroying me, since she was Level 5000. Having spent about an hour getting to that point, I was not pleased at all...
I really want to unlock some more music...I'm getting a bit sick of the title theme as my Item World music. I want Laharl's vocal theme! >=O
Oh, and I'm going to give some random advice to anyone playing Disgaea 2 on PSP: NEVER, under ANY circumstances, pester the shopkeepers in the shop in the Item World if they don't invite you to buy goods. I kept talking to a vendor in the hope that she'd sell me some things...she told me the shop was closed and to leave. Then MADE me leave by absolutely destroying me, since she was Level 5000. Having spent about an hour getting to that point, I was not pleased at all...
I really want to unlock some more music...I'm getting a bit sick of the title theme as my Item World music. I want Laharl's vocal theme! >=O