The PSP really has only had 1 price cut, which is the most recent one. The system debuted as a bundle for 250, and soon after the system was offered on its own for 199.
The software attach rate numbers are pretty interesting. If you just look at American sales, the PSP has a slightly higher attach rate of ~3.75 vs. ~3.60 for the DS. But Japan is just nuts! The attach rate there for the DS is over 8 games per system. Nintendo has sold 130,000,000 units of software in 2+years in Japan. In 7+ years, Sony sold 148,000,000 units. The DS' numbers are so ridiculous, I'm almost inclined to say this site's figures must be wrong, but I know very well that VGChartz is really accurate. Crazy.
My Top 5:
Shadow of the Colossus, Metal Gear Solid 3, Shenmue, Skies of Arcadia, Chrono Trigger
My 2 nex-gen systems: PS3 
and Wii 
Prediction Aug '08: We see the PSP2 released fall '09. Graphically, it's basically the same as the current system. UMD drive ditched and replaced by 4-8gb on board flash memory. Other upgrades: 2nd analog nub, touchscreen, blutooth, motion sensor. Design: Flip-style or slider. Size: Think Iphone. Cost: $199. Will be profitable on day 1.
