I also only found two 561's on ebay. Looks like it was discontinued.
Avital 4003 Add-On Remote Starter Valet 561T -Free Tech | eBay
Is there a specific immobilizer needed? I see a bunch on ebay that all claim to work on most vehicles.
I'm not anti Viper, and I don't want to be a cheapskate, but right around $200 is what I can do. I'm about to drop $200 to do the brakes all around, and I just had to replace the alt+battery at around $225. It's a bad time of the year to spend this much on the car, but my wife *really* hates the cold. If she could start the car from a window a few minutes before she leaves work, I know it would make her happy. $80 isn't so bad for install really. I just want to be sure I know what I'm getting into.
This is all good info, thanks guys. Keep it coming.