I bought my service manual from Toyota last fall from Toyota. As far as I know, they should have your as well. I called one of the national dealers to get a better price on it. I forget exactly what I paid, but it was under $100
Watch Ebay. I got mine for pretty cheap. I have a Chassis and Body Manual, and Engine Manual, and the Electrical Diagram book. For all three I paid about $30 with shipping. Bob Shaptop just picked up a set of manuals on Ebay last week for around $25. Just keep your eyes peeled on Ebay.