While changing my engine oil I noticed a small smear of grease on the outside of my drivers side CV boot. I have no clicking or any noticeable symptoms of a failed CV joint. I went to 2 service garages and the first suggested they will only replace the complete shaft at $500.00 while the second stated they would drive the vehicle and if they felt there was no symptoms of a failed CV joint they would replace the boot only at $200.00 and if a new shaft was required it would be $400.00. Do these prices seem right? Do I have any other options? Is this a job to tackle without a hoist? Both prices do not include tax. The van is a 2002 with excessive miles on it, 462,000K.