Bluetooth retrofit

My new Prius came without Bluetooth phone capability and I want to add. I undertand Pariot works well. But there is no wiring harness available for 2010. But then the temptation is to go for the MKi9200 which has a screen that displays all incoming calls and even info about music playing through Ipod or CDs and there is really no place on dash to mount. Toyota offers a retro installation of Bluetooth [PT923-00097]. It is pricey [$515.90] and nobody at dealer can tell me what it get with the package. Anybody have any experience?