A PlayStation 2 development kit used to cost $10,000. You can now get a PlayStation 3 development kit for $10,250.
Unlike the PS2 development kits, the PS3 development kits include the development tools now. (They used to cost ~$2,000 a seat additional previously.)
Also, you can now use the test kits for development purposes.
Wow...Sony actually learned from Microsoft on this one. An Xbox development kit costs $10,000, comes with the development tools, and you can compile against a test kit. Say what you will about the hardware, but when it comes to making things developer friendly, Microsoft knocked it out of the park.
Now if they'd just learn from the 360's kernel design, the PS3 might be a bit more attractive.