I have 05-06 radio. The volume knob don't act funny sometime, sometime the volume goes up when you want to turning it down. Otherwise, everything work well.
I have the security code.
You only have to pay for the shipping.
Your problem is very similar to what mine had...
Start fine, but run very rough for s short time and perfectly after....
The alternator finaly get stuck after sitting in the driveway for couple weeks and i sold it..
Because fews people put link to fews website, but you question thoses sources.
From what i know, the battery of the first Prius generation are still good when the car reach the end of there life. Company buy it for use it for other think.
Generally the battery last longer than the car itself.
http://insideevs.com/wp-content/uploads/2015/12/maxrange2.png
Even after 85 000km, the battery is still good at 94%..