OEM Keyless entry options

There is a great thread on installing an OEM keyless entry in a std cab w/o power door locks. I have an 07 Prerunner DC w power locks and immobilizer but no keyless. What I'm wondering is "Are there other door control modules that work on the Taco?" All the part suppliers charge $400+ for part 89741-04010 which does not include any wire harnesses. I've noticed that the Camry and Sienna are identical in looks for $30 to $50 on Ebay. The cheapest Taco unit on Ebay is $200. I'm close to saying screw it and go with after market. I know mine doesn't have it installed because I can't find the unit in the kick panel and it won't go into program mode.
Thanks

For those who want the thread mentioned above: http://www.tacomaworld.com/forum/2nd-gen-tacomas/165089-keyless-entry-conversion.html

 

What did u ever do im in the same boat